Good evening. A claim today by isis that it had a hand in the shooting attack on an antiislamist gathering in texas sunday has ratcheted up concerns about isis in this country, and its potential reach. Its the first time Islamic State has tried to claim credit for an attack on american soil. The white house today labeled it an attempted terrorist act, but it dismissed the isis claim itself. It may, however, be a fine distinction, as there are indication the shooters, who were both killed, were inspired by isis to go on the attack. We have two reports, beginning with our justice correspondent, pete williams. Reporter in radio and internet messages, isis claimed the two gunmen from phoenix, nadir soofi and Elton Simpson, were soldiers of the caliphate, or Islamic State, and that worse things are coming. U. S. Officials call it an attempt to claim credit and say theres nothing to show isis actually planned or directed the plot. They say simpson used several social media accounts and expressed his support for isis, tweeting, may allah accept us as mujahideen before the two men started firing in texas. Officials say this latest plot is part of an alarming new trend with isis shifting away from propaganda aimed at a mass audience and instead calling for action directly on social media. One official said its like someone repeatedly tapping you on the shoulder asking, when are you going to do something . Its even more powerful now, with so many westerners in isis contacting friends back home. They are trying to, you know, egg somebody on potentially doing an attack back in their homeland for those that are still back in the home. Reporter investigators say several thousand people in the u. S. Trade messages on isis social media, a number impossible to track individually. And trying to shut down every isis social media account is hopeless. The answer, many say, is more people putting out an opposing message online. I believe a counterideology or a counternarrative to the isis radical ideology could be successful, but it has to be grassroots. Reporter investigators have yet to determine when the attack plan was formed. They say simpsons social media postings did attract attention from police and the fbi last month, but they say he was never explicit about any attack plans and was not under constant surveillance. Pete williams, nbc news, boston. Reporter im Miguel Almaguer in phoenix at the apartment of Elton Simpson and nadir soofi, where federal investigators have been searching for clues. The police and Homeland Security and fbi, we knew something was serious going on. Reporter soofis family is looking for answers, too. He was born in the u. S. , a father to a young son. It never entered my mind that anybody i knew would even do Something Like that, much less someone in the family. Reporter he spent time in pakistan as a child. Classmates tell nbc news he was popular and used to be called goofy because of his laidback attitude. Said to be a heartthrob, soofi starred in the play bye bye, birdie. Friends say he came from a privileged family but became more isolated in recent years. He was a devout muslim, like Elton Simpson. Usama shami is the president of the mosque simpson attended regularly until about four years ago. A very good demeanor. Very good attitude. Always a smile on his face. Reporter simpson caught the fbis attention nearly a decade ago. In 2010, he was investigated for planning to join a terror group in somalia, but he was convicted of lying to a federal agent and placed on probation. He just seemed very calm and quiet and, um, i really had believed that the charges against him were trumped up. Reporter in a statement, simpsons family says they are struggling to understand how he could become radicalized, writing, we are sure many people in the country are curious to know if we had any idea of eltons plan. To that we say, without question, we did not. Neighbors say the two men lived in the apartment complex behind me together for years. Law enforcement sources say the guns used in sundays shooting were purchased legally. Lester . Miguel almaguer tonight, thank you. In baltimore today, where emotions are still raw over the death of freddie gray and the violence that followed, new attorney general, loretta lynch, made her first public official trip since assuming office last week. She met with grays family, Community Leaders and police days after six officers were charged in connection to grays death. An attorney for one of those officers, meantime, filed a motion claiming the knife gray allegedly had on him at the time of his arrest was illegal, despite prosecutors claim to the contrary. One of the nations biggest banks is under fire tonight. Wells fargo accused of committing fraud against its own customers. Employees allegedly opening accounts that customers never asked for, then charging them fees and damaging their credit. Nbcs Anne Thompson has this report. Reporter a bank is a ptrust. Franklin on says what he got in return at wells fargo is frustration. I only needed for my businesses two accounts and they opened over 15 accounts for me. Reporter many accounts, on said, were opened without his approval, earning fees for the bank and endless headaches for this los angeles Small Business owner. They opened personal accounts, checking accounts for me, then savings accounts on top of those, then it is just, oh, man, it was a mess. Reporter these highpressure tactics to meet sales quotas are the heart of the lawsuit filed this week by the city of los angeles against wells fargo. Wells customers have been victimized by tactics designed to maintain high levels of sales of wells products. Reporter the suit accuses wells fargo of creating a virtual feegenerating machine, hounding family and friends open extra accounts, using confidential customer information to open credit cards and other accounts and damaging customers credit reports when the unauthorized fees were not paid. Wells fargo is the nations fourth largest bank, with more than 6100 branches across the country, just over 1,000 in california alone. Wells fargo says it will vigorously defend itself against the charges. Its culture, it says, is focused on the best interest of its customers and creating a supportive, caring and ethical environment for its team members. For customers like franklin on, experts say carefully monitor your Bank Activity off and online and Pay Attention to your credit reports. Anne thompson, nbc news, new york. Former arkansas governor, mike huckabee, today became the sixth republican to officially jump in the race for president , with strong support from evangelical conservatives. Huckabee won eight stays in the the 2008 republican primaries. Today, he announced his second run for president in his hometown of hope, arkansas, which is also the birthplace of former president bill clinton. Meantime, the Clinton Campaign is working overtime tonight to hit back at allegations being made in a highly anticipated new book out today called clinton cash, about her family foundation, her money and where it all came from. Nbcs Andrea Mitchell is on the trail in las vegas. Reporter Hillary Clinton courting hispanic voters at a Las Vegas High School today, while her Campaign Launched a counteroffensive, a new website, a twitter account and a campaign video. The book is already being debunked far and wide. Reporter a war of words with the author of clinton cash, leaked in advance but officially published today. Im not saying, andrea, that there was a quid pro quo, but what i am saying what you see is a pattern of behavior, funds flow in either through the foundation or the form of speaking fees and there is a favor them. Policy decision that tends to favor the recipient. Full of sloppy research and attacks pulled out of thin air with no actual evidence. Reporter and part of the rebuttal, an appeal for campaign money, raising cash from controversy. Bill clinton strongly defended his wife in his exclusive interview with cynthia mcfadden. Not a single, solitary fact has been introduced that she has done anything wrong. People should live to be as honest as she is. Reporter but when that other former arkansas governor, republican mike huckabee, announced he was running for president today, he did it with a dig at clinton. I dont have a Global Foundation or a taxpayerfunded paycheck to live off of. Reporter the pounding is taking its toll. Her numbers in our new nbc news wall street journal poll, have gone down on trust and honesty. 25 . Only 25 think she is trustworthy. Thats part of why we have got to answer back and show people what really are the facts. Reporter but clintons polls are holding up against potential republicans. She remains ahead of all of them. The Democratic Party announced today it will hold six primary debates. Hillary clinton tweeted she looks forward to a real conversation, but so far, not about money. Lester . Andrea mitchell tonight, thank you. Overseas tonight, a major humanitarian crisis unfolding in the mediterranean. A flood of migrants from Northern Africa fleeing war and hardship, desperate to reach europe. It is an extraordinarily dangerous journey. Last month, 800 people drowned when their ship capsized. In just the past three days, 7,000 migrants have been rescued at sea. One rescue south of sicily was captured on video. Nbcs bill neely has the story. Reporter the sea is calm, the migrants are not, desperate for rescue by a passing cargo ship, they scramble for life preservers and try to climb a rope. Easy, shout the crew, but they are panicking. Some jump, many cant swim, their dinghy is taking on water. A woman and child look anxious. Some from their boat drowned earlier, another like it sank at sea. But these africans are lucky, one by one, climbing to safety. And just in time. The dinghy is about to sink. The dead are removed. Its happening every day. We are facing one of the major humanitarian crises of our time. Mediterranean is being turned into a mass grave. Reporter europes leaders promise more help. An american saves lives with his own boat. We have 12 pregnant women, over 60 women and 40 children. Reporter a baby girl was born on one rescue ship. Another boat sped back to libya, its migrants sent home. We are suffering cant you see we are suffering . Reporter many are drowning at a chance of freedom and a wave of Migration Europe cant stop. Bill neely, nbc news, london. A potentially very dangerous night ahead in the Southern Plains with at least one tornado touching down in west texas and the threat of more over the also bring the risk of large hail and damaging wind gusts. And we are also keeping a close eye on the southeast, where an area of low pressure in the atlantic could form a Tropical Storm over the next few days impacting florida and the carolinas. Some major changes are coming to a chain where many of us eat every week, as Customer Trends show we are concerned more and more concerned with whats in our food. Panera bread announced its changing at least 150 ingredients to get rid of additives many probably didnt realize they were eating. Nbcs Halley Jackson has the details. Reporter panera bread is cooking up a new menu, making headlines not for what its adding, but what its removing, dozens of artificial preservatives, sweeteners and flavors, including some fdaapproved additives also found in pesticides, Petroleum Wax and perfume. What we are attempting to do for consumers here is give them a comprehensive, transparent list that gives them clarity and allows them to feel confident in their choice. Reporter panera is one of Many Companies catering to the health conscious, like nestle, which is getting rid of fake flavors and colors in some candy bars, and kraft, transitioning to natural spices instead of synthetics in mac and cheese. Its great that companies are responsive to what people say they want. Whether they will purchase this based on changing tastes and texture and appearance remains to be seen. Reporter some food Safety Advocates say paneras moves are more about Public Relations than public health, arguing just because somethings artificial doesnt make it unsafe. Theres a lot of scary stuff on here. Does this say glycerol esther of wood rosin . Reporter but gia says she feels better knowing what she is and is not feeding her family. It just makes me feel better knowing i can walk into a place and i dont have to think about it. Reporter for panera, a new menu to reflect changing tastes. Halley jackson, nbc news, los angeles. Still ahead tonight, periscope and all the ways to live stream your life. Im doing it right now, if you want to see whats going on behindthescenes during a commercial break. But there are other big concerns that go along with it. We will take a look at those when we come back. Later, a young girl surrounded by violence and heartbreak half a world away and a nightly news viewer who saw her story on this broadcast, then did something amazing to change her life. We will be back. Ge her life. We will thank you for being a sailor, and my daddy. Thank you mom, for protecting my future. Thank you for being my hero and my dad. Military families are thankful for many things. The legacy of usaa Auto Insurance could be one of them. Our worldclass service earned usaa the top spot in a study of the most recommended Large Companies in america. If youre current or former military or their family, see if youre eligible to get an Auto Insurance quote. Incredible ive been claritin clear for ten days. When your allergy symptoms start, doctors recommend taking one claritin every day of your allergy season for continuous relief. With powerful 24hour, nondrowsy claritin live claritin clear. Every day. 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The event was the richest boxing match of all time in las vegas which millions of people paid big money to watch on tv, but it turns out a lot of people saw it for free, thanks to new technology that is raising a whole host of concerns. Nbcs tom costello takes a look. Reporter if the Mayweather Pacquiao match didnt quite live up to its billing, it may have touched off a different fight of the century in cyberspace. While payperview customers paid 100 each to view the fight, at least 66 people live streamed it over periscope, for thousands, perhaps more to watch illegally for free. The ceo of twitter, periscopes parent company, declared periscope was the real winner. At any moment, periscope offers a smorgasbord of live feeds to choose from, public and private moments. A concert in london, a family at a petting zoo, a man playing piano at home. From the mundane to the scandalous, its now possible to live stream to a global audience, but that opens up a world of privacy and legal issues. Live streaming movies, tv shows or payperview events, very often a copyright violation. The fact is it takes money to create content, it takes money to produce a fight, a major live event like that. You can expect that people will want to protect the exclusive agreements they have with broadcast companies. Reporter hbo is already warning periscope users to stop pirating its programming, while professional sports and the National Association of theater owners all ban live streaming. Curt wagner covers social media for nbc partner, re code. I dont think we know as a society what is appropriate and whats inappropriate and it is only gonna happen over time. Reporter after the ceo first boasted that periscope was the real winner on saturday, the company today said, we respect intellectual Property Rights and is working to take down copyrighted content. New Technology Opening a pandoras box filled with legal and privacy issues. Tom costello, nbc news, washington. And if youve been watching our periscope feed, we are going to turn it off now and direct you back to the tv. We are back in a moment with u2 performing again in the u. S. , months after bonos devastating accident, but they werent on any stage. Devastating accident, but they werent on a vo todays the day. More and more people with type 2 diabetes are learning about longacting levemir®. As my diabetes changed it got harder to control my blood sugar. Today, im asking about levemir®. Vo levemir® is an in that can give you blood sugar control for up to 24 hours. And levemir® helps lower your a1c. Levemir® lasts 42 days without refrigeration. 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