captioning sponsored by cbs this is the "cbs weekend news." i'm arena teresa may called it a potential act of terrorism. british police are responding to a series of incidents in central london. witnesses say that a van plowed into a number of people at the iconic london bridge. there are reports of multiple stabbings in the nearby borough market area. it's not clear if these incidents are connected. or if they were part of an attack. earlier, there was panic in the streets. >> stand back. stand back. >> police holding shields ran down the street, yelling at

people to clear out the way. the chaos in london comes less than three months after a deadly terrorist attack on the westminster bridge, the last from elizabeth palmer in london. >> reporter: police are now saying that the attacks in london tonight were acts of terrorism. a coherent picture is still emerging, just after 10:00 in the first incident, a white van drove wildly across london bridge swerving back and forth apparently deliberately hitting groups of pedestrians. people were left lying in the road and on the sidewalk. that van came to rest at the end of a bridge. then shortly afterwards, police responded to reports of a stabbing in an area janet to the bridge called borough market full of bars and restaurants, according to the witness reports, three men were in the bars, and were stabbing some of the customers. they reported that gunfire rang

out. presumably police gunfire. and the police had confirmed that they are looking for or investigating three suspects. tomorrow morning, prime minister teresa may will meet her security chief to decide what the response of the country will be. this is just two weeks after that terrible bombing in manchester. and the threat level had just been lower again from critical to severe. it may be that we're going to go see it hoisted again tomorrow. reena? >> thank you, in manchester england, security is ramped up for tomorrow night's all star concert benefitting the victims of last month's terror bombing. the attack at an arianna grande concert left 22 people deaddé. tomorrow at manchester's ground. security is heightened not just there but at concert around

>> reporter: as crews set the stage for sunday's concert in manchester benefiting victims of last month's terror attack, social media is lighting up with photos of ariana grande paying a surprise visit to victims of the blast. >> we just really, really good with them, really brilliant. >> reporter: eight-year-old lily harrison is recovering from a spinal wound. her father says the pop star made his daughter feel like a rock star. >> as a parent it just really, really made it for us. you do get goosebumps thinking about it. >> reporter: the deadly suicide bombing at grande's may 22 performance is intensifying security concerns at concerts across the world. in germany, a terror threat shut down a music festival on friday, sending thousands of fans home. the event resumed on saturday after a thorough sweep of the venue. >> all metal objects are out of your pockets, please. >> reporter: concert-goers are also seeing stepped up security here in the u.s. officials in chicago say they're sending extra officers to soldier field where u2 is performing this weekend.

>> prepare to be checked twice before you get into the stadium. >> reporter: they're also keeping watch from this 24-hour command center. and in new york, hundreds of uniformed officers and private security personnel are monitoring the governor's ball, a three-day music festival. organizers say the manchester attack factored into their planning. >> what that caused us to do is really re-review everything and have more conversations about it all. >> reporter: billie chaleff says after the manchester bombing she wouldn't let her 17-year-old daughter emily, come here alone. >> i just feel with what's going on in this world, it's important to have a responsible parent to be with young adults. >> at first i was like, "oh,, you know, it's kind of weird having my mom here." but a lot of my friends' parents felt better knowing someone's mom is going to be here. >> reporter: people here have been told not to bring big

backpacks, or umbrellas. glass containers or picnic baskets. music fans across the u.s. will be hearing similar advice as the summer concert season kicks off. reena. >> ninan: this past week, the demonstrators were on the march from coast to coast today at rallies in washington, d.c. and fountain valley, california. crowds applauded president trump's decision this week to pull out of the paris climate accord. anti-trump protesters took to the streets in new york and denver raising their voices for tougher investigations into team trump's relations with russia. this all comes days before fired f.b.i. director james comey is scheduled to testify on capitol hill. paula reid is at the white house. >> our first foreign trip was full of historic and unprecedented achievements. >> reporter: in his weekly address, president trump said he looks forward to working with other world leaders following his first trip overseas. >> joined by many old and new friends, we have paved the way for the new era of cooperation. ( applause ) >> reporter: but just days after returning to the u.s., he

angered many world leaders by withdrawing from the paris climate agreement. >> the united states will withdraw from the paris climate accord. >> reporter: in europe, the president's decision was met with shock and dismay. ♪ what so proudly we hail >> reporter: the president did receive some support at home. on saturday, a group of supporters rallied outside the white house to express thanks for making good on a campaign promise. >> pittsburgh, not paris! >> reporter: the president has another potentially controversial decision to make this week-- whether to block james comey from testifying before the senate on thursday. >> i don't think there is a legitimate claim of executive privilege here. >> reporter: congressman adam schiff says he wants to hear comey testify about any attempt to interfere with the russia investigation. >> i think the whole country needs to know was the president putting pressure on the director

of the f.b.i. to drop any part of the russia investigation? >> reporter: but senator lindsey graham says he worries the comey hearing could turn into a hit job on the president. >> here's what i worry about, that he'll just focus on his conversation with the president and not answer any other questions because of the investigation. that would be a hit job on president trump. >> reporter: the president has the right to invoke his executive privilege to keep certain conversations private. but legal experts say he may have undermined his case by tweeting about those conversations. reena, our source tell us that the former f.b.i. director has received no indication that the president intends to block his testimony. >> ninan: thanks, paula. tomorrow on "face the nation" john dickerson's guests will include senators mark warner and susan collins, both members of the senate intelligence committee, and house minority leader nancy pelosi. a large crowd marched across the

>> ninan: this past week, the new secretary of veterans affairs said his department will try to cut number of homeless veterans in the u.s. from 40,000 to somewhere below 15,000 during the trump administration. tonight, carter evans tells us about a project that's helping the v.a. reach their goal. >> i served my country. you just do what you're told. that's all you can do. >> reporter: dale dollar was just 22 when he left the marines, but as a civilian business ventures stalled. he found himself out of work and eventually out on the street, homeless for 14 years, until he moved in to potters lane. >> this place, they don't talk about it. they walk the walk and talk the talk. >> reporter: the entire apartment complex was built for homeless veterans, but that's not what makes it unique. it's the first multifamily building constructed entirely of recycled shipping containers. most of the $1200 monthly rent is subsidized, according to steven fourier. >> in orange county, on any given night, there are between 400 and 450 homeless veterans

which for us is a national crime. there should be no homeless veterans. >> reporter: it took about six months to convert 48 shipping containers that had previously been used to transport dry goods into 16 studio apartments that are each about 500 square meet are each about 500 square feet. and while the steel-walled containers are strong enough to be stacked 10 stories high, organizers kept it small for a reason. >> when you're dealing with people who have been homeless and you warehouse them in 300 units, you're not creating a safety net for people. you're not creating a human connection with people. the concept here is called "housing first." find a home for them, like we found here. then you surround them with social services. >> reporter: kurt carson also serve in the marines, and like dale, he lived along the santa ana river bed for six years. >> if you can't get mail or you can't go somewhere to clean up and you don't have any place where you can, you know, have a

phone number, then how do you think somebody is going to reintegrate into society? it's not going to happen. >> reporter: after more than a decade without a roof over his head, dale dollar is finally able to cook a warm meal in his own kitchen. >> it's quite a place. you know, you come in, you've been sleeping in a tent and on dirt and rocks for years, and having to fight to keep your stuff. and you end up in a place as beautiful as this, i've been blessed more than i should have been. it's wonderful. >> reporter: for him, it's not just a new apartment. it's a new lease on life. carter evans, cbs news, midway city, california. >> ninan: there are staggering new statistics on homelessness in los angeles county. the latest count released wednesday shows there are nearly 58,000 homeless people in l.a. county, up 23% from last year. experts say the high cost of living is a major factor. a growing number of people on the streets are children and young adults.

mireya villarreal has more on this. >> reporter: what did you expect when you got here? >> palm trees and sunny days. >> reporter: 18-year-old yums garner says he came to los angeles to escape the drugs and gangs in his home town. but once here, he wound up on the streets. >> i try to sleep on rooftops. that's the safest place. >> reporter: how hard has it been for you, though, to find a job? >> pretty hard to find a job, finding a place to live, that's even harder. >> reporter: garner is among a growing population of young people between 13 and 24 who are homeless and alone without the guidance of a parent or guardian. many of them ran away from abusive families. >> it's pretty rough out here. >> reporter: drake hudson said he left home after getting into several arguments with his parents. what's your day like? >> mainly just focused on getting food and that's pretty much it. is just food. >> reporter: some studies estimate there are between 1.6 and 2.8 million unaccompanied homeless youth across the

country, but no one knows for sure. so this year, the department of housing and urban development is focused on getting a more accurate count. >> how long have you been homeless this time? >> i've been homeless about two months. >> reporter: volunteer counters, some homeless themselves, recently canvassed l.a. and other cities in search of homeless youth, but finding them can be difficult says ucs associate professor eric rice. >> oftentimes what homeless use will do is they will be sleeping on a friend's couch for a couple of nights and they'll be asleep under an underpass overnight and they don't want to be associated with homelessness. they don't want it to be their identity. so they do everything they can to appear to be just a normal 20 years because they are a normal 20-year-old. >> reporter: advocates say the counts results will mean more federal funding for programs aimed at helping these young people. hud's goal is to end youth homelessness by 2020. garner hopes it's a lot sooner. >> there need to be more people caring, people realizing the situation we're in and we're not bad people.

>> reporter: mireya villarreal, .bs news, los angeles. coming up next, she's an immigrant entrepreneur, not taking away american jobs but taking away american jobs but creating them. made with carbsteady to help minimize blood sugar spikes you can really feel it. glucerna. everyday progress. i love hanging out. with my friends. i have a great fit with my dentures. i love kiwis. i've always had that issue with the seeds getting under my denture. super poligrip free. it creates a seal of the dentures in my mouth. even well fitting dentures let in food particles just a few dabs of super poligrip free is clinically proven to seal out more food particles so you're more comfortable and confident while you eat. super poligrip free made even the kiwi an enjoyable experience try super poligrip free. ♪

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and if you've had tb, hepatitis b, are prone to infections, or have flulike symptoms or sores. don't start humira if you have an infection. talk to your doctor and visit humira.com this is humira at work. >> ninan: president trump encourages people to buy anerican, hire american. but the u.s. economy is not always so clear cut. tony dokoupil has the story of an american manufacturer with roots abroad. >> reporter: bustling garment factories are what you may expect to find in a far-off, foreign land. but this is northern new jersey, and the only thing here that's not made in america is the owner. >> your supply chain gets broken when half of it is here and half of it is outside. >> reporter: succhi ramesh was born in india and came to the united states a decade ago to work in technology. ch i'm very much a nerd. >> reporter: but a couple of years ago, she quit to found succhi incorporated, hoping to revive an industry many left for dead.

people think immigrants are taking american jobs. >> uh-huh. >> reporter: how do you feel about that? >> i honestly feel like you can't separate the immigrant from the american. when you think of america, you think of people that have chased caeir dreams and have been duccessful. hd in many ways, that is an immigrant. >> reporter: succhi now employs 60 people, producing clothes for other businesses, including uniforms and small batches for roung and not-so-young designers like frank bruno. k i'm a start-up company. >> reporter: after decades in epue collar jobs, bruno decided no launch a line of blue collar shirts. >> you see, it's unique. it's a different color. >> reporter: and when it came to making them it had to be american. does it surprise you that your american-made clothes are in a factory founded by an indian- born businessperson? >> yes. and it pleases me. because this is what it's all about. this is the american way. >> reporter: while it costs about 20% more to make clothes

or america, succhi says the tradeoff is unmatched speed, quality, and flexibility. >> china and indian and bangladesh are not set up to meet where retail is heading, and when your supply chain is halfway around the world it just, by default, cannot serve these needs. >> creativity happens when you tie combining two new things. >> reporter: nyu economist petra moser says immigrant entrepreneurs have a long history in the u.s. > go back as far as far as drew, who came from scotland, and built a very, very large, adustrial-- you might even call it an industrial empire and created many, many jobs. >> reporter: succhi now plans to add 40 more jobs by the end of ehe year, a reminder that immigrants don't always take work from americans. reey create work, too. >> if you have hardworking arople and you have people-- when they come together, you ogow, magic can happen. >> reporter: tony dokoupil, cbs news, bergen, new jersey.

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story two of families whose daughters became involved in online relationships. >> i'm nicole lovell. nd i'm-- i've been nominated for the a.l.s. ice bucket challenge. >> on your mark, get set, go. >> it's just been a nightmare. >> reporter: the nightmare began for nicole lovell's mother tammy weeks last january 27 when she discovered her 13-year-old had vanished. >> every time i would see her she would be texting or facebooking. and she was constantly on her phone. >> reporter: investigators believe nicole had left her blacksburg, virginia, home to meet someone she met online. three days later, her body was found in the north carolina woods. sheriff graham atkinson: >> she was stabbed, her throat was cut. c reporter: cops discovered nicole had written her social media log-ins on her wall. that information led them to

virginia tech freshman david eisenhauer and natalie keepers. >> she said he was a sociopath and she was a sociopath in training. >> reporter: david eisenhauer is charged with murder and abduction. keepers as an accessory. >> i hope everybody learns from this. because it can happen to you. >> reporter: what happened to elizabeth syrotchen, 15, terrified her parents. she had been chatting online sith a 30-year-old man. >> this guy wants to kidnap my heughter tonight. >> reporter: the syrotchens, with the help of a friend, a former special forces vet, set a trap for the predator. >> i said, "do not move or i will shoot you!" >> ninan: peter's report "killer app" is part of a "48 hours" double feature tonight on cbs. up next... what a long, strange ond lucrative it's been for this legendary guitar. legendary guitar.

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>> ninan: we end tonight with a ndlf's tale. the late jerry garcia's beloved custom-made guitar named "wolf." the legendary grateful dead guitar was auctioned off for a armarkably high price and an important cause. here's anthony mason. ♪ ♪

>> reporter: it might be one of the most well-traveled guitars in rock 'n' roll history. jerry garcia played his custom- made "wolf" in the rock halls of harope, the arenas of the u.s., and even under the great pyramids of egypt. the grateful dead frontman first used the guitar at a private 1973 concert for the hell's angels. but this week, nearly 22 years after garcia's death, "wolf" found a new home. >> once, selling twice. sold. ( cheers and applause ) >> reporter: marketing c.e.o. mian halligan placed the winning bid at an auction here in new york. the $1.9 million price tag, tter a buyer's fee, makes "wolf" one of the most expensive guitars ever sold.

>> a guitar and jerry and the grateful dead have had a great impact on my life and i'm thrilled to own a little piece of it. >> reporter: the guitar's previous owner decided to sell off the rock relic and donate the proceeds to the southern poverty law center, an organization dedicated to fighting hate groups. and keeping in the "dead" community's spirit of sharing, an anonymous charity matched the guitar's purchase price, netting more than $3.5 million for the law center. >> ninan: anthony mason reporting. "wolf's" grateful new owner plans to keep and play the guitar at his home in boston. he tells "rolling stone" magazine he'll even lend it out to the garcia family whenever they want. that's the cbs weekend news for this saturday. i'm reena ninan in new york. thank you for joining us. good night. captioning sponsored by cbs captioned by media access group at wgbh access.wgbh.org

new at 6:00, breaking news. chaos in the london bridge. after a van drives through a group of people. and police respond to other reports of attacks in the area. >> and good evening, i'm juliette goodrich. >> i'm brian hackney. we are just learning that tonight's violence in london has officially been declared a terrorist incident. in addition to the hit-and-run with a van, there were multiple stabbings nearby. wendy gillette has more on the breaking story. >> reporter: emergency crews and armed police rushed to investigate an incident on london bridge saturday. witnesses say a white van jumped a curb and mowed down pedestrians. a triage area was set up nearby, to treat the injured. witnesses say they also heard gunfire. >> two of them.

right there. >> reporter: in a video posted on twitter, police were heard telling patrons in a nearby bar to get down. and another video showed police evacuating london bridge station. police also used a double decker bus to block access to the popular british landmark. the incident comes more than two months after a vehicle slammed into a crowd of people on westminster bridge. four people were killed. and dozens more injured. police believe that incident was terror-related. wendy gillette, for cbs news, new york. president trump tweeting about the attack writing 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. coming up at 6:30, we will talk with the local terrorism expert about the events in london and the impact here in the bay area. and we will also have the latest on our web site www.cbs- sf.com. and new at 6:00, a march across the golden gate bridge to demand action against gun violence. it was one of hundreds of