before. >> i think the rain graphic is stuck. >> i know. burned in. all right. nbc nightly news is coming up next. from nbc news world world world headquarters in new york, this "nbc nightly news" with jose diaz-belart. >> good evening. we begin tonight with a developing situation in london treated as another act of terrorism in that city. it happened on london bridge, where a van plowed into a group of people and at a well-known market very nearby, where several people were stabbed. nbc's matt bradley is in that area near london bridge tonight. matt? >> reporter: thanks, jose. i'm actually standing in front of suffolk bridge, two bridges down from london bridge. this bridge and many others here in london have been shut down by

police. i was just there, though, right in front of london bridge a couple of minutes after the incident occurred and what i saw was an overwhelming police presence, dozens of ambulances, police cars, and a helicopter overhead. and i spoke with some witnesses, one woman told me that what she saw was someone lying on the ground in front of a restaurant near london bridge, while people were trying to administer cpr, looking like they were trying to revive a victim, someone who was injured, and then she said she also saw a couple of other bodies, people who were either injured or dead, lying near this victim, but that after that, the police told her immediately, with her friends, to run as fast as they could away from the incident. and another person i spoke with said that he was actually living above borough market, this popular fashionable restaurant area, right on the south side of london bridge. he said that when he came out of his apartment he saw police officers armed with long rifles. that's an exceedingly rare sight here in london, where police are famously unarmed. and once he saw these

police officers, they immediately pulled away his camera, and told him to cross the bridge and not to return home. so as you can see everybody here on tenter hooks right now. london police said they're treating this as a terrorist incidents, they escalated the threat to suspect in terrorist incident to terrorist incident, that means the hanhaunt will be expanding. nbc's lucy calf and a half is following the story from our london bureau tonight. lucy? >> jose, this is obviously a developing situation but we are talking about attacks on civilians in two locations near the thames river this saturday night. something the brit irprime minister and the police tlard to be a terrorist incident. this attack began town fold just after 10:00 p.m. local time, a white van was seen speeding down london bridge, heading south, plowing into a crowd of pedestrians, multiple casualties according to witnesses and the police. it also appears that there were stabbings at nearby borough market, armed police

rushing to the scene to respond. look at how one eyewitness described what he saw to our partners at itn news. >> the main thing was an arrest being made, maybe definitely like two, three men, young men, dressed in -- >> reporter: what area was in a. >> borough high street so they were pushed against a shuttered shopfront and being shouted at to you know, put your hands up and all of that stuff, and -- >> reporter: what did they look like? >> i would say they're young-ish, males, maybe mid-20s, maybe a bit younger. all in black, well they had like black hoodies, black hair, and, yes, i mean i just really saw the backs of them, but it was heavy police presence. the police weren't -- it wasn't the armed police. they looked to me more like riot police. >> jose, prime minister theresa may will be chairing an

emergency response meeting in just a few hours, with all of the top security and intelligence officials here in the uk. they will be poring over the witness, witness reports, cctv footage to piece together what happened and understand whether the people here in the uk are still under threat. >> london one of the cities with more cctvs than anywhere else on earth. lucy kafanov thank you very much, as well as matt bradley. kelly o'donnell is at the white house this evening, monitoring this breaking news. kelly? >> reporter: well, jose, senior advisers tell me the president's national security team briefed him on the incidents in london and that was led by his national security adviser, h.r. mac master, and updates as warranted will happen through the night. the president also spoke with vice president pence, who was on board air force ii, traveling back to washington after a day in iowa. the president's public comments have come through his twitter feed. he wrote "whatever the united states can do to help out in london and the uk, we will be

there. we are with you. god bless!" but notally that was not the first message from the president's twitter feed, earlier he wrote "we need to be smart, vigilant and tough. we need the courts to give us back our rights. we need the travel ban as an extra level of safety!" that pointed political message from the president referring to his attempt to use a six-country muslim majority nation limit on visas and immigration for 90 days. it's been tied up in the courts. the trump administration seeking help from the supreme court to try to get that enacted. so the president using his twitter feed to make a very political message. and then his earlier comment was simply re-tweeting a published report that had not been confirmed. white house officials say they don't expect any formal statement from the president tonight, as they continue to watch developments. but there are other things on the white house's mind as officials are preparing for what could be an eventful week in the ongoing investigation involving russian connections to trump officials and the campaign, and

questions about what those ties might be. that brought out americans across the country protesting for and against the president. >> let me tell you, i -- >> reporter: in the shadow of the washington monument, demonstrators rally for sunlight. >> truth! >> reporter: demanding answers and transparency on the russia investigations that have top advisers of president trump under jut know. under scrutiny. >> jeffrey sessions, michael flynn! >> reporter: from new york to the west coast, organized as a march for truth. in front of the white house today, supporters of the president showed up to shout down critics. and in iowa, vice president mike pence was upbeat. >> president donald trump is a man of his word. >> reporter: but words can get in the way. a potential showdown looms between president trump and the fbi director he fired. james comey is expected to testify about the russia investigations and his meeting with the president before the senate intelience

committee. >> hopefully he will bring clarity to this question about what he and the president might have discussed or what the president might have asked him to do, but that's up to him. >> reporter: but president trump could intervene, with the power of executive privilege, to keep comey from testifying about their private conversations. the trouble is, the president has been tweeting and talking himself. sitting down with lester holt. >> did you ask him to drop the investigation? >> no, never. >> reporter: then taunting comey by tweet, suggesting he might have "tapes" of their conversations. legal experts say executive privilege is rarely used, and may not apply against the fired fbi director, because of the president's own actions. >> the president has in all likelihood, waived executive privilege by opening his mouth about the conversations. >> reporter: senior white house officials say there is no decision whether the president will attempt to use that executive privilege. they want to keep all their legal options on the table.

there was already a plan to try to turn the page next week by focusing on infrastructure spending with the president planning to go on the road to talk about money for bridges and roads, and the air traffic control system, something that both republicans and democrats often support. jose? >> kelly o'donnell at the white house, thank you. in texas, it was an afternoon shattered by bullets flying between a murder suspect and police. several bystanders captured the violent confrontation on cell phone cameras. when it was all over, several police officers were hurt and the suspect was dead. nbc's maya rodriguez has the details. [ gunfire ] >> reporter: a shoot-out between officers and a murder suspect in broad daylight. a terrifying scene outside a convenience store in laredo, texas, on friday. >> i saw people running and i see the gunshots pointing -- i saw an officer, an officer down. >> reporter: investigators say it all came to a head after a six-hour

manhunt for 55-year-old antonio gerardo rodriguez, a suspect in the killing of his girlfriend, 50-year-old rayna zamora gonzalez. >> we had officers who scoured the entire city pretty much throughout the day, not only our law enforcement agency but others. we had everybody looking for this man. >> reporter: four police officers were wounded, three seriously. rodriguez was killed. >> just to see the injuries, all the blood loss and such, it's very, it's the worst that i've seen, worst experience of my 20-year career. >> reporter: police say rodriguez had a criminal record and had previously served time. the laredo police department on facebook asking for prayers, and noting that bystanders helped the injured officers. >> i was scared because he was still shooting, so i was scared, because i was like i'm not prepared like to die or anything, but i was like, i'm going to help him out. >> reporter: tonight, three officers remain hospitalized, as their families, fellow officers, and the

community they protect, pull for their recovery. maya rodriguez, nbc news. there is new tension to report tonight between the city of clearwater, florida, and one of its most prominent and controversial institutions, the church of scientology. the latest episode involves the church's attempt to buy a piece of land that the city also wanted. we get more from nbc's kerry sanders. >> reporter: just a short distance from this picturesque waterfront sits a 1.4 acre patch of dirt, a flash point in a fight between church and state. the church of scientology offered $15 million to buy the land. instead the owner sold it for a fraction, $4.25 million. the buyer, the city of clearwater. >> i think there was religious discrimination with respect to the church, and that the city somehow made this into a scientology issue, when it did not need to be. >> was the sale to the city religious discrimination? >> oh. my gosh, no.

that is such a silly argument. it's offensive. >> reporter: suspicion and distrust between local government and the church dates back to the 1970s, when the controversial church quietly bought land here, establishing its spiritual headquarters. church leadership says the land was part of a $60 million expansion that was to be built with the city as a partner. the church produced an animation showing how it fit into a massive retail and entertainment complex, but now, without the land -- >> it's dead, because it was part of a partnership, and the city rejected the partnership. >> if they don't want to go forward, that's up to them. we are committed to redeveloping our downtown, and that whole retail picture improving it. >> reporter: the owner that sold the property to the city, the clearwater marina

aquarium, a non-profit made famous by that gal over there, winter, the dolphin. two hollywood movies later, the 1.4 acres had been part of a tentative aquarium expansion. the aquarium completed the sale of the lot to the city in april, arguing it was the best use of public space. >> we were going to go with the city because they wanted to buy the property. we're a community partner also and they partners will and they want this to be for the entire community. >> reporter: as for the 1.4 acres the city says it now owns it with no immediate concrete plans to develop it. kerry sanders, nbc news, clearwater, florida. we turn to this country's drug epidemic and the devastating impact it is having on one big city. that city is philadelphia, which came up with a series of treatment and prevention recommendations last month. they called the problem a public health crisis marked by a steady increase in overdose deaths, but even before this report was issued, some in philadelphia felt compelled to take matters into their own hands, including a most unlikely group of people dealing with the epidemic right at their doorstep. we sent steve patterson to take a look.

warning for you, some of the images he brought back are graphic. >> come on, poppy, wake up, dude. >> reporter: it's a life and death moment. >> i got to get to the other nostril. >> reporter: a man overdoses on heroin and meth at a park in philadelphia. people rushing to his side including a first responder who administers the life saving antidote narcan. >> go grab another dose. >> reporter: sherri kowolsky is specially trained to use the nasal spray something not in her job description. kowolsky is a librarian, one of several in her library trained to use the drug. >> once someone is overdosing, a minute or 30 seconds can mean life or death. >> reporter: she normally works with teens at her branch, one of the busiest in the city. >> when i decided to become a librarian i looked at it from i wanted to serve communities. >> reporter: the century-old building in the heart of philadelphia's kensington neighborhood sits in the middle of mcpherson square park known to many as needle park. >> kids and the teens have to see this stuff on a regular basis. it's upsetting that this is their normal. >> reporter: the park is on the front lines

of the nation's heroin epidemic, with evidence of battles lost, scattered like weeds. >> we probably pick up with needles 50 on up maybe. >> reporter: 50 a day? >> yes. >> reporter: park worker rafael feliciano finds himself helping addicts in the park. his workload is increased dramatically. the city's public health department predicts almost 1,200 opioid deaths in philadelphia this year, up 32% from last year, and the parks surrounding the library has become a focal point. >> the opioid crisis, the heroin crisis was knocking at this library's front door. it was camping out on its lawn. >> reporter: philadelphia enquirer columnist mike newell started writing about it when he learned of a big increase of people buying, selling and using in the park and hanging around the library. he was more shocked to learn how the librarians took matters into their own hands. >> they got narcan training. they started having -- many libraries have fire drills. they have overdose drills. >> half a dose in one

nostril and half in the other. >> reporter: and it's working. since april, kowolsky revived people who overdosed six times, including this week just after we spoke with her, jumping out of the library to save that man, as we watched. >> calm, lay down. >> you're fighting. you can't do this, poppy. >> reporter: when the library sits at the crossroads of a crisis ravaging its community, services here are a lifesaver. >> it's life or death for a lot of people. it's a second chance. >> reporter: steve patterson, nbc news, philadelphia. >> the mayor's office says that outreach workers have been sent to the neighborhood and that a police mobile command center will be set up in the area soon. we'll be right back. in the mirror everyday. when i look in the mirror everyday. everyday, i think how fortunate i am. i think is today going to be the day, that we find a cure? i think how much i can do to help change people's lives. that helps me to keep going to cure this. my great great grandfather lived to be 118 years old.

i've heard many stories from patients and their physicians about what they are going through. i often told people "oh i'm going to easily live to be 100" and, uh, it looks like i might not make it to retirement age. we are continually learning and unraveling what is behind this disease. i may not benefit from those breakthroughs, but i'm sure going to... i'm bringing forward a treatment for alzheimer's disease, yes, in my lifetime, i will make sure. what do you have there? p3 it's meat, cheese and nuts. i keep my protein interesting.

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[engine starts] [guitar continues] some bad news this week for the $5 trillion retail industry with more store closings and job cuts announced, and a dire prediction about the future of malls. what's causing it all? nbc's stephanie ruehl has details. >> reporter: americans love to buy, but getting shoppers into traditional malls and stores is becoming a hard sell. shopping centers turning into ghost towns as consumers shift to online shopping. because of the internet, do i not need to have the mall experience when i'm going through racks of clothes in the 50% off area? >> no, that's what's even sadder. i think the discounts that online is offering outbeat the store. and therefore, again, consumers aren't shopping at the mall anymore. >> reporter: just this week a new prediction

that over the next five years, 20% to 25% of malls will close permanently. big anchor stores like jcpenney, sears and macy's have all recently announced closings. the ripple effect can be devastating. since you're without your anchor store on this mall macy's, and there's a lot of empty storefronts, is it affecting the foot traffic? >> yes, general foot traffic of course affected especially losing macy's, it's not helping. >> reporter: hurting jobs, too. when this macy's shut down in new jersey, 107 people were laid off. on friday, the labor department reported more than 6,000 retail jobs lost in just one month. more than 100,000 retail workers have lost their jobs since october. that's more than the total of coal workers in the u.s. malls that survive will have to innovate, becoming more than just a collection of stores. >> what i think retailers really need to do is become more experiential.

they need to provide some sort of entertainment for consumers when consumers want to shop in the store. >> reporter: sn industry in need of a little retailer this pi. stephanie ruehl, nbc news, morristown, new jersey. in a moment, remembering a man who built a big business around the world of surfing. surfing. (bell rings) with my moderate to severe crohn's disease,... ...i kept looking for ways to manage my symptoms. i thought i was doing okay... then it hit me... ...managing was all i was doing. when i told my doctor,... ...i learned humira is for people who still have symptoms of moderate to severe crohn's disease... ...even after trying other medications. in clinical studies,... the majority of people on humira... saw significant symptom relief... ...and many achieved remission. humira can lower your ability... ...to fight infections, including tuberculosis. serious, sometimes fatal infections and cancers, including lymphoma, have happened;... ...as have blood, liver, and nervous system problems, serious allergic reactions, and new or worsening heart failure. before treatment, get tested for tb. tell your doctor if you've been to areas where...

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manait's a series of is nsmart choices. and when you replace one meal or snack a day with glucerna made with carbsteady to help minimize blood sugar spikes you can really feel it. glucerna. everyday progress. three, two, one, and liftoff. the. >> scene late this afternoon at the kennedy space center

in florida, a spacex falcon rocket blasting off to a mission to the international space station. it was the first time that the supply capsule attached to the rocket was reused, and then there you see the separation, the first stage took place a few minutes later, and then look at this. the rocket is making a successful return to earth, touching down, kind of like legs out, not far from where it took off. pretty amazing. singer ariana grande has returned to manchester, england. it's been less than two weeks since the suicide bombing killed 2 people after her concert in that city. grande met with young survivors of the attack at a hospital last night. tomorrow, she will will perform when it in manchester along with other pop stars, a benefit for the victims of the attack and their families. tonight she tweeted "praying for london." a pioneer in the sport of surfing has died. back in the 1950s, jack o'neill began experimenting with ways to insulate swimwear so surfers could be more comfortable in cold

water. that led to the development of the neopreen wet suit and also led to what became an international surfwear business named after o'neill that continues to this day. jack o'neill died in california. he was 94 years old. and we will be right back. mmmm. mmmm. mmmm... ugh. nothing spoils a moment like heartburn. try new alka-seltzer ultra strength heartburn relief chews. it's fast, powerful relief with no chalky taste. [ sings high note ] ultra strength, new from alka-seltzer. enjoy the relief.

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tourists this spring. the word is out, the waterfalls are the best they've been in years. our guide tant, gadi schwartz. >> reporter: the best way to yosemite for first timers is through this first tunnel. and here's what it feels like -- >> oh, my god. >> reporter: -- when the valley comes into view. >> oh my god. >> reporter: robert mcgowan and beth picked the perfect year to see yosemite. >> i didn't expect to see the waterfall right then. >> reporter: the record-setting snowpack transforming into misty, white ribbons decorating the walls of the national park. epic meltoff breathing new life into more than 50-named waterfalls and hundreds of others that haven't flowed in decades. >> i've worked in yosemite for over 20 years now, and i've never seen this much water. >> reporter: splendor that could also bring more tourists than ever. >> so much power. i've never seen it look like this. >> reporter: patricia moore wants a closer look, so she heads up the mist trail, a path that seems to get wetter at every step.

it's sunny outside, but it is raining. toward the base, rainbows close enough to touch. hikers happy to be sopping wet. >> i am soaking it all in, literally soaking it all in. >> reporter: it's one thing to climb to the foot of a waterfall. it's a whole other to make this daring kind of ascent. last weekend, professional climber sasha dejulian and john cardwell, the first free climb from the bottom of yosemite's misty wall to the top of the tallest falls in north america. even higher still at glacier point, kids choosing their favorite sites. >> the waterfalls and the mountains. >> reporter: this is a place where everyone realizes pictures can do no justice. >> you just sit there, take it in. it's all you can do. amazing. >> reporter: yosemite, finally seeing the end of the drought and a valley restored to its full glory.

gadi schwartz, nbc news, yosemite. >> that's "nbc nightly news" for this saturday. i'm jose diaz-belart reporting from new york. thank you for the privilege of your time. good night. another night of chaos in britain, after three separate, violent [ sirens ] another night of chaos in britain after three violent attacks. the news at 6:00 starts now. good evening and thank you for joining us on this saturday night. >> we begin with the breaking

news out of london. a live look at one to have scenes. you can see a lot of law enforcement on the streets right now. police say the first report of trouble came in about 10:00 p.m. london time, 2:00 this afternoon our time. a van plowing into people on london bridge. a short time later, people stabbed at borough market. police say a third incident previously believe connected is unrelated. tonight, investigators believe those two attacks are terror related. >> tom jensen joins us now with the latest. tom, initially they weren't saying if they knew for sure if these were terror attacks, but about 20 minutes ago, they confirmed that was the case. >> reporter: and we don't know why they made that confirmation. perhaps it's just because these happened at the exact same time. but that third attack that we thought was an attack they're now saying was not related to this. as you said, this hand about 2:00 our time, about 10:00 at night london time. witnesses say that van plowed into and through