The grieving and the desperate scramble to determine whether the attacker was acting alone or whether he had help, today, tuesday, may 23rd, 2017. From nbc news, this is a special edition of today, terror in manchester, with matt lauer and savannah guthrie. Live from studio 1a in rockefeller plaza. Good morning, everybody. Welcome to today on a tuesday morning. We begin with this terror in england. I cant imagine theres anyone in this country that cant visualize that scene. Young people at a concert with that exhilaration coming out. Separated from their parents and reconnecting with their parents. British Prime Ministerer the re terreheresa may asked the briti people to show the fortitude theyve shown in the past. Officials increased the death toll to 22 people, noting that children are among the victims. 59 others were injured. Manchester believe it was one man who carried out this attack, using an improvised explosive device, a suicide bomb. Theyre working to determine if he had accomplices. Speaking from israel, President Trump denounced the attack, calling it the work of, quote, evil losers. Were hearing from Ariana Grande hours after her concert. She tweeted the bombing has left her broken and so, so sorry. Lets begin with chief correspondent Richard Engel, at the Manchester Arena. Good morning to you. Reporter good morning, savannah. This is the arena where the attack took place. Around the world, aryaianna gra attracting a very young audience. Teenagers, preteens. This was an attack against children. Prime minister theresa may said it was a callous attack that targeted young members. It police have made the connection of the attack with a 23yearold man. Panic in the arena, moments after a bomb exploded right outside. The horrifying sound of fans, nearly all of them young girls, screaming in terror. The concert was clearing out when the bomb went off. It targeted people as they were leaving to meet their rides home. In many cases, parents, picking up their kids. We now know a single terrorist detonated his improvised explosive device near one of the exits of the venue, deliberately choosing the time and place to cause maximum carnage and to kill and injure indi indiscriminately. A big flash. A flash. And then, a whoosh of air. Just thought, what the hells that . A stomach wound, a leg wound, we think broken a femur. Well know when she gets to hospital. Reporter their daughter was inside trying to get out, but a stampede erupted. The lights came up after the concert and there was a big bang. And all of everyone started running, people screaming and crying. And we tried to look for the first exit point. Reporter the artist, Ariana Grande, was not hurt. But in a tweet, she said shes, quote, broken, from the bottom of my heart. Im so, so sorry. I dont have words. Shock among the concertgoers, too. Many spent the night in hotels or apartments, many offered by locals for free. Many havent changed. Still carrying the bunny airs that many of the fans wore when the explosion happened. It was really loud. And it went silent. Was it like a stampede . People were falling . Yes. People were moving. You jumped off of the balcony to a lower level. Yeah. It was so steep. We didnt stand up during the show. Reporter police determined that a lone male suicide attacker deattack er detonated an improvised bomb. Theyve been in contact with their families. But Charlotte Campbell is still awaiting word about her 15yearold daughter. Im heartbroken at the moment because i dont know where she is. I dont know if shes alive even yet. Reporter the witness accounts weve been hearing paint a very grim picture of girls stumbling down staircases as they tried to escape, with children screaming, i lost my mommy. Theres reports that the British Security services believe they have identified that suicide bomber. They are not, however, releasing his identity as the investigation is ongoing. Theyre trying to determine whether he had help. Back to you. Richard engle, outside the Manchester Arena. Thank you. As you saw and as richard mentioned, the bombing set off chaos. Zach was there with some friends. Good morning to you. Hi. I was reading that you and friends were considering leaving the concert before the encore song. And someone convinced you to stay, which put you inside the arena when that happened. Is that right . Yeah. Well, we were stood there, we knew she would have an encore song. Certain people were trying to leave. We stopped them and said, you should wait. Shes going to do another song. It will be an encore. If we didnt tell them that, they could have left. And things could have taken a turn for the worse. We were planning on leaving. A lot of people were leaving early because they didnt know if it was anner core or not. And it happened after the final song. No one knew at that moment. What did you hear . What did you see . It must have been like ten seconds after she left, after the lights came up. There was a huge bang. It sounded like a gunshot. Of coursel obviously, you dont expect anything of it. Maybe she dropped the mic backstage. We were making a joke of it. It wasnt until moments after everyone started screaming, we were on the upper tier. We could see the whole arena. And we saw everyone running towards the exit where we were. It took us a while to get down. Thats when we got out into the arena lob poby. We saw everyone screaming and crying. It was horrific. Did you get near, do you think, where the bomb was detonated . Im sure the bomb was detonated on the bottom floor, obviously towards the back. It wasnt inside where we were. It was in the lobby, in the outside, where the tshirt stands are. But i know a friend that was out there at the same time. And she said when she heard it to off, she felt the vibrations. We were on the upper tier, so, we didnt. We werent as close. She heard it so clearly and so loudly. Thats where everyone scattered as soon as it happened. Did you see the injured . We understand it, there was the explosion. But also, a chaos and a stoom ped that happened afterwards. Yeah. It was crazy. We got out, went to the lobby was, where the exit was. And there were people with banda bandages. There was blood everywhere. We didnt know what happened. We heard bomb a few times. And everybody was panicking. We saw people all down the street with blankets, getting help. Little kids crying. We had no idea what actually happened. We heard a loud bang. Zach, youre a young guy. Youve been living in the u. K. Under a heightened state of alarm for security. Does this now change things for yu . Does this change the way you view your surroundings . Does it change the way youre going to go about living your life . I think it will change the way for everyone there last night. You tonight expect it. There was security on the way in. Everyones bags were being checked. My friend had a backpack, she was being checked. On the way out, they opened the door for anyone. There was thousands of people to meet their friends, kids and people to go home. The terrorists could have easily gone in towards the end of the concert. That would be when it happens. It has changed my perspective in terms of safetiness. Obviously. You never know. You never know anyway. Zach, thank you for taking the time to talk us to today. Were happy youre okay. Thank you. Thank you. The president , of course, is condemning this attack. He is in israel. He called whatever was behind it, quote, evil losers. Kristen welker has that part of the story for us this morning from jerusalem. Good morning. Reporter good morning to you. President trump spoke with the british Prime Minister theresa may earlier today and offered con toll le condolences in the wake f of that attack. He started his day with talking with the palestinian authority. It started with a strong rebuke of terror. The horror that unfolded in manchester, as the president met with the leader of the palestinian authority, Mahmoud Abbas today. Offering prayers and condolences. We stand in solidarity with the people of the united king m kingdom. So many young, Beautiful People, enjoying their lives, murdered by evil losers in life. Reporter the president condemning the attackers in his strogest te strongest terms. I wont call them monsters because they would like that term. They would think thats a great name. I will all them, from now on, losers, because thats what they are. Theyre losers. And well have more of them. But theyre losers. Just remember that. Reporter mr. Trump tying the attack to the major theme of his trip and presidency. United the civilized world to combat terrorists. The terrorists and extremists and those that give them aid and comfort must be driven out of society forever. Reporter as he aimed to restart peace talks between israelis and palestinians, mr. Trump insisting that true peace starts in the middle east. I think if israel and the palestinians can make peace, it will begin a process of peace all throughout the middle east. And that would be an amazing accomplishment. Reporter the president solemn as he visited the world holocaust museum. His daughter, ivanka, tweeting about the attack. Writing, we stand united with our friends in the u. K. , with our hearts going out to the victims of this violence. The president heads to rome tonight. How is the attack in Great Britain going to Impact Security here at home . Pete williams is our security and justice correspondent. Good morning to you. Reporter good morning to you. In the u. S. , department of Homeland Security is not urging police to take specific action because theres no known threats here at home. Nonetheless, police in new york, as they often do, as a precaution, sent extra teams to yankee stadium, where a baseball game was under way, as word of the attack began to spread. Extra police, too, in times square and at train stations. And there today, police will be doing random bag checks at subway and train stations. The governor of new york, mario cuomo, has directed more security at airports, bridges and tunnels, as well. And police in boston will step up their presence at concert venues at that city. Theres is no evidence of danger to concert venues. But many cities may deploy extra security at Public Places and events. As we do after these attack, police and Homeland Security are saying vigilance. Lets turn to the former director of the u. S. Counterterrorism center. Michael, good morning. Good to see you. These are the early hours of the investigation. But the fact it appears to be an explosive, that alone suggests a level of sophistication. And i presume raises the possibility there was help here. I think thats right, savannah. We tonight know exactly how powerful the explosive was. But is 22, so many injured, that increases the effects of it. But this suggests someone with an understanding. The fact today, you dont need to go to a place like syria to get that understanding. You can get it on the internet. That makes the attacks so tough to stop. This suicide bomber did not challenge security at a venue. We think, how tough is it to get in to one of these arenas. He stood outside of a perimeter, near a hub of temperatureranspod waited for the guests to pour out of the building. As people were exiting, there they were. This is a trend we see more and more. We saw it in the airport attack in turkey. We saw it in the attack in brussels. They know where the sturdy perimeter is. We heard there was one arrest, presumably maybe more. What are investigators doing . Theyve made a big step. They identified the individual from elements at the scene. From there, you go out in circles. Every person he talked to. Where the money was. Make sure no one else is out there plotting. From there, its understanding how this occurred. It will look a lot like what weve seen in the past. Radicalization via the internet. Move to wherever you are and you end up with this tragedy. It might change the way he views his life and security. The british have an expression, stay calm and carry on. Does this change things in Great Britain, which has been the target of so many attacks over the last 12, 15 years . Undoubtedly, matt. For the people who were there and saw this, it will change their perspective. For the british people and for this battle, it wont change that much. Thats something that the british understand from their fights against the i. R. A. , al qaeda and now isis. It will modify tactical elements of security at places like these venues. Ultima ultimately, this is facing it with a stiff upper lip the. Just as they have on 7 7 in london. And other attacks. Lets make a turn and get a quick check of the weather from al. All right, guys. Thank you so much. A lot of rain down through the southeast. Moving into the midatlantic states. You can see we have pretty strong storms going on from new orleans up to raleigh. Thats where we have 26 million folks at risk for flash flooding today. As low pressure moves up the coast and the midatlantic, downpours through the southeast will continue into tomorrow, as a second front diapers down into florida, bringing muchneeded rain into those areas. But we have a flood threat because the ground is saturated one to two inches of rain generally. Generally. But up to four inches when you turns out things arent always what you think they are. Generally. But up to four inches when you take guinea pigs. Theyre not pigs at all, nor are they from guinea. Or take this haircut. I may look all business, but look out. But theres a party going on back here. Kinda misleading, isnt it . Well, at carmax, you dont have to worry about being misled. The price online is the same price in the store, which is the same for everyone. Even guinea pigs. Its only fair mr. Biscuits. Only fair. Carmax music sting good morning. Im meteorologist bill henley. A dry start with breaks of sunshine. Clouds and sunshine this morning, then clouds back this afternoon. A warmer day today. 74 degrees in philadelphia and low 70s in the suburbs. Any fog this morning disappears as the morning progresses. New jersey will be dry, but the first to see showers later today will be the jersey shore. Those showers coming up from the south. Central and southern delaware will see Late Afternoon showers. Eventually moving into the rest of the area tonight. And thats your latest weather. Guys . All right, al. Thank you very u very much. Coming up, much more into the investigation of this tragic terror attack, at a crowded Ariana Grande concert. And new information on an arrest made overnight. First ts is today on nbc. Hi Chris Christie addiction is a disease. It can happen to anyone. Help is within reach. All you need to do is ask. Vanessa i was a fullblown heroin addict, selling my soul to get high. But i got help, and you can too. James i just know i didnt want to feel that pain anymore. I got help. You can too. Aj most people think addicts are beyond help. When i see an addict, i see hope. Chris christie dont suffer. Dont wait. Call 844 reach nj or visit reachnj. Gov. Yeah. We love low prices. No bones about it. [ laughter ] great everyday prices and thousands of bonus buy savings. My giant. Just ahead, the growing number of arenas, concert halls and Public Places being targeted by terrorists. Can anything be done to make them safer . But first, a look at your local news and weather. Hey katy, im going to go ahead and invade your personal space to run some things by you. Its going to look like im listening but im actually just paying attention to nugget. Cool. Ill pretend youre answering the questions i have. Ill scroll through my feed and avoid making eye contact. Im just going to keep hovering. Wouldnt it be great if everyone said what they meant . Hovering away. Boo boo boo [making noise at nugget] the citi® double cash card does. It lets you earn double cash back with 1 when you buy, and 1 as you pay. The citi® double cash card double means double. Mmmm. Mmmm. Mmmm. Ugh. Nothing spoils a moment like heartburn. Try new alkaseltzer ultra strength heartburn relief chews. Its fast, powerful relief with no chalky taste. [ sings high note ] ultra strength, new from alkaseltzer. Enjoy the relief. The days looking new and bright, and youre gonna start it right, the best part of wakin up is folgers in your cup. You all the time. Ories am i going to pass away like my mom did . And so you know this is something thats important. Losing my mom to Heart Disease and then being diagnosed myself. Its like a war were trying to fight against these diseases. Resilience is in my dna. I wont die like my mom. Its a big challenge, but the challenge in itself is what keeps me going. I could really make a difference in these peoples lives. That would be my dream. Assave 30 on paints and stains may 19th through the 29th. Ale theres a store in every neighborhood. Find yours at sherwinwilliams. Com save. I wish you were here. I miss home. Tango for the guy who finds a way. Always unstoppable. 7 26. Good tuesday morning. Im tracy davidson. Well look at the weather with first alert meteorologist bill henley and the most accurate neighborhood forecast. Bill . A dry start this morning. Mostly cloudy skies. Weve seen a bit of sunshine and areas of fog. The worst of it is in reading now. Zero visibility there. Not an issue in bluebell or philadelphia international. Light fog in dover is starting to improve now. Fourmile visibility there. Temperatures in the 50s and low 60s. 70s this afternoon. But clouds come back with a chance of rain heading into this evening. Thank you. Lets check the roads. Theres an accident involving a school board bus to tell you about. Francesca ruscio with more. We have an accident on the westbound side of the schuylkill expressway involving the school bus. Again, it was originally blocking a lane. Now its off to the shoulder. As you see, traffic is still able to get by. It has created a bit quite a bit. A delay. Lets see what were looking at now. Westbound traveling 95 toward the schuylkill, its going to take you seven minutes. Its there off to the shoulder. Developing this morning, Philadelphia Police looking for three men and the victim they beat up and kidnapped in east falls. A witness told police a man stepped out of a brown minivan at roberts avenue and fox street last night and beat up the driver of another car. The attacker then threw the driver into the minivan and took off. Two others from the van stole the drivers car. Tonight at the art museum, actor Comedian Ke