breaking news this morning on "world news now" -- a deadly explosion at an ariana grande concert. >> a massive blast creating chaos. young fans and parents running for their lives in the midst of confusion and carnage. >> the late dooes taist details analysis from home how it could change security at major events. you are watching a special edition of "world news now." we begin with suspected terrorist attack at an ariana grande concert in manchester, england. >> at least 19 people are dead, dozens injured. most alarmingly. many victims are the youngest aamong us. after an explosion at the end of the concert, police are treating it as a terrorist attack, and there is a

>> injured were trampled as they rushed to leave the arena after the explosion. many at the concert keep in mind were young teens and preteens. abc's tom rivers has more from london. >> reporter: cell phone video capturing concert-goers fleeing the packed arena. after the last act by singer ariana grande. the pop star off staining when witnesses say large blasts rocked the area near the box office. [ explosion brgs. >> pandemonium inside and outside the venue, as the audience rushed the doors amid a sea of pink balloons. >> everyone just like running, people are screaming, crying. and weep just tried to look for the first -- exit. >> reporter: police quickly confirming a number of fatalities and dozens of people injured. >> the explosion went off. it threw me through the first stet of door

st set of doors. >> she tumbled over the seats a but three seats. >> u.s. officials briefed on the investigation say, the leading theory throughout the night, was that this was the work of a suicide bomber. prime minister teresa may saying it appears to have been an appalling terrorist attack. also, overnight an agonizing waiting game for parents and friends of people a. tendi iatt concert. posting notes and pictures of the missing on social media. asking for any one who may have seen them. tom rivers, abc news, london. ariana grande was not physically hurt, but different story. tweeting, she is broken. from the bottom of my heart, i am so sorry. i denlt have words. >> her management team released a statement saying our hearts are broken words cannot express our sorrow for the victims and families harmed in this senseless attack. tmz reporting that the rest of her concert tour in europe has been

>> joining us live is former fbi counterterrorism official and abc contributocontributor, steve take often during incidents look this. a different one. how do authorities make a determination a terror group is responsible? >> well once they have identified who the suspect is, and, especially a suicide bomber, they're going to dig into that person's life. build a pre fiofile as to what in the person's mind. were they doing this on behalf of a terrorist organization. was it something that they just wanted some attention for whatever reason. they're going to look at the social media, profile. and they're also going to be looking for any claims of sponlt from a terrorist organization itself. like isis, isis, like day or two later will, will claim responsibility. so those are the kind of things that they will look for in order to make the determination if it is a terrorist attack. >> steve, the ee motieg emotion reaction. grande's fan base. targeting kids. from an investigative

why did they choose the target? >> you look at the size of the venue. so you have got a stadium that can fill about 21,000. a high-profile event. ariana grande, known worldwide. followed boy bye so many people, include youngster, my daughter included. you also have, the fact that it is an area where from the stadium once you zbroit side the stadium, there is a train station that is not that far. so the terrorists or the suspects who committed at take. probably recognize between the stadium and train station, a lot of people leaving the stadium once it is over. and there would be a large crowd. and the crowd itself, is the target. for the terrorist or the person wanting to commit this attack. they're looking for mass casualties. high impact. that's what you got in the situation. >> well, that, that is a unique situation there for manchester. you do have the arena right there, next to, next to -- the train station. and

new york. it would seem as if the terrorists, who ever that person was, knew perhaps they couldn't get into the arena. and picked this as the what is, hate to say it again, a soft target outside there. >> exactly. very similar to what we saw in france. when, when the, german french, soccer game and there was an attack. a bombing right outside of the, of the entrance of the stadium there. and you also see this type of vulnerability. with airports. the area that is, before the screening section of an airport. that is very vulnerable as well. we have seen a number off takes occur involving individuals that go up. and either start shooting or they commit some type of, violence. up to the point of the screening. >> any protection from an incident like this r in the u.s. though? >> people have to recognize that there are these vulnerabilities as you are going to a venue, large event. ball game, whateve i

that ladying up to that place, where they start the screening, nobody is watching unless there are law enforcement officers both, in, in, gear, you know, with weapons out and everything. there are also probably undercover officers that are fleeting around. looking for people that are suspicious. so they just have to be, mindful, that there is a, vulnerable area. you can, may want to check out. going to a large event. is there security that is going to be in place. not only in the venvenue. >> need a screening area for the screening area. screening area for that jeani g screening area. tough to keep everybody safe. >> going back to theage of the people in this. one benefit, a lot had their cell phones out and they were recording all of this. how helpful will that be? >> that will be very helpful. a lot of the people are probably going to be posting that, that video, or information on, instagram, facebook, whatever social media.

they use. law enforcement will be scouring platforms to find information evidence. contacting everybody who was there, asking for them to turn in any individuvideos informati have. that interaction between law enforcement and all the concert-goers, also any body in the area outside the stadium. not only when the boom went off. but leading up to, several hours before, because the assumption is going to be the suspect was watching and waiting and once the concert ended and they saw people exiting, that was the time that, that the suspect. >> all right, that was former fbi counterterrorism official, abc contributor, steve gomez. love having you on. wish it was for better news. we love hearing your analysis. thank you so much. >> great, thank you. >> we will continue to have much more from manchester later in this half-hour including, how that community is now rallying to support people who were part of the event and witnessed the whole thing.

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19 people are dead after an explosion at an ariana grande concert in manchester, england. dozens injured. the blast may have been set off by a suicide bomber. the american singer herself uninjured. many victims were her young teen and preteen fans. no one has claimed responsibility. of course going to continue to stay on top of this breaking news story. >> president trump meeting ini bethlehem with the palestinian leader. >> after a warm reseptembering in israel, the president toured several sites. including becoming the first u.s. preside

optimism about mideast peace during a press conference with benjamin netanyahu. >> the president surprisingly brought up the controversial oval office meeting with the russians. >> just so you understand, i never mentioned the word or the name israel. never mentioned it, during that conversation. never mentioned the word israel. intelligence cooperation is terrific. >> thank you. >> trump was never actually accused of telling the russians that israel was the source of classified information. but he still has then't denied sharing that information with russia. >> the president's former national security adviser michael flynn pleading the fifth. flynn is refusing to comply with a subpoena calling for him to turn over personal documents to the senate committee looking into russian election meddling. meantime, the ranki

on the house oversight panel says, he has evidence that flynn apparently lied about his business dealings with russia and says flynn mislead investigators reviewing his security clearance about payments he received from russia's state sponsored tv not werk. >> supreme court struck down two congressional districts after they were remapped saying, race played too big a part how in they were shaped. the state's republican controlled legislature redesigned the two districts after the census in 2010. height court said too many african-americans ended up in the districts and weakened their influence in other areas. >> students in maryland gathered to remember a young man brutally stabbed in front of his friends. the school held a remembrance ceremony and candlelight vigil for the senior set to graduate as the the fbi is looking into whether this was a hate crime. abc's adrian bankart. >> sean

to face first and second degree murder charges in what the fbi says could possibly be a hate crime. police saying the attack on richard collins was unprovoked. >> lieutenant collin's life is important we need to give his family answers why was he killed not only who killed him under what circumstances. >> the 23-year-old rotc student was standing with friend amount the university of maryland bus stop at 3:00 a.m. saturday, when urbanski approached them, screaming. witnesses tell police he told collins to step left if you know what's good for you. collins was puzzled and said no. witnesses say that's when urbanski stabbed him in the chest. police say urbanski is linked to a facebook group, alt-reich nation that posts racest memes. >> shows exfreem violence against women, latinos, jewish faith, and especially african-americans. >> abc news learned the suspect has no cremmal record. his attorney says he was

collins said to graduate from nearby bowie state university recently commissioned as second lieutenant in the army. >> he had dreams of going and doing great things, serving his country. loving his family. loving people heeft loved god. >> police are looking at surveillance footage of the stabbing while the state's attorney is asking for patience from the community staying they're gathering evidence and it is far too early to call this a hate crime. adrian bankart, abc news. >> mississippi law make ear poll jazzing for skments he made on facebook over the weekend. sparked widespread anger. first term representative, collin oliver posted leaders in louisiana should be lynched for removing confederal monuments in new orleans. well her ud a statement yesterday saying he deeply regrets his choice of words. oliver faces growing calls for him to resign. >> in the meantime, texas on the verge of passing a bathroom bill. similar to

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silent in six languages. transmit and receive messages from police headquarters. some comment from authorities there, they say designed to to help us fight crime. keep city safe and improve happiness levels. >> oh. not sure how it improves happiness levels offering you ticket and handcuffs. >> can't frown. doesn't have a mouth. >> there you go. >> comelinew information from t deadly explosion in the uk. new accounts from eyewitnesss. stay with us. you are watching "world news now." what does life look like during your period? it looks great with tampax pearl. you get ultimate protection on your heaviest days and smooth removal for your lightest. tampax pearl and pocket pearl for on the go.

just some of the horrific scenes we are seeing from manchester overnight. many witnesses are describing chaos and horror. children screaming. following fate tal blast at that arena there. >> we heard from phrases, come out of witnesses mouths like, a war scene. running for my life. now let's hear some more from the witnesses themselves.

>> it's shocking, what happened. just carnage everywhere. the whole building shook. definitely an explosion, definitely a lot of casualties. >> towards the last song, let helium balloons down, quite large. and this bang happened. >> that we were just leaving the concert. ariana grande left. the lights came up. suddenly a huge sound like an explosion went off. everyone stopped, turned around. and somebody shouted. it's a bomb. everyone just started running. everybody was trying to push people up the stairs. a lady in a wheelchair trying to get away. she was absolutely, people were just pushing past her. >> the most frightening experience of my life. total chaos. >> but the problem is, a lot of children there without parents. there was no one to calm them down. everybody was just screaming.

and pushing. >> i was waiting, an explosion went off. it threw me through the first set of doors. about, 30 foot. the next set of doors. when i got up and walked around. there was 30 people, just, everywhere. some of him, looked dead, might have been unconscious. a lot of fatalities. >> when we first came up to the door, there was a guy covered in blood. terrify thing that can ever happen to day person. it is like, i will never forget it. >> every hospital. the place she is registered in as missing person. she is not registered at any hospital yet. and father is out looking for her. i have friend out looking for her as well. >> just absolutely heartwrenching thinking of the parents. young kids in some cases at the concert. now looking for their loved ones unable to find them. >> so many tweets, face book messages with people saying have you soon this person? have you've seen my daughter? have you seen my son? in many cases they're not getting any responses saying we ha.

>> the bright spot, we have also seen people coming together in tragedies to help each other. coming up more of the messages of support.

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always. we're back with more on the deadly explosion at an ariana grande concert in manchester, england. any time we see attacks like this. we see the worst of what human beings are capable of. when we look deeper into the story. we often find also the best of what people are capable of. seeing the stories coming out of manchester this morning. and, security firm. that protects ambassadors has already take tune social media giving a shoutout to hotels in the area saying hotels have opened their doors. to children and other people that were at the arena. giving them free shelter. helping them to locate family members. beyond hotel rooms.

together and started using the hash tag room for manchester. because the trains in the area have been shut down for security reasons. >> remain so. many people stranded in the area. you have locals opening their doors and posting on social media. i have a room. i have a couch. so on, so forth. you got to see people come together help one another. >> 21,000 people inside the concert venue. so many people in the area. waiting for people who are inside. and probably couldn't make it home after that concert. the cabbies were also helping out. as a result of this. incident. take a look at the tweet. this, many of the manchester cabbies are offering free ride to general public. hash tag. manchester we are with you. improving to the hash drag. even the liverpool cab drivers. started driving over the manchester. you know football, liverpool and manchester. they're not. as you know. they're not necessarily friends. but, in times of tragedy. it brought them together. >> buried the

you know that is big. many of the local cab drivers started driving with their lights off. shutting off the meters taking people where they needed to go. particularly to the hospital. many are still looking for the loved ones. speaking of which. face book trying to help them. activated a safety check feature for that area. so people an go phone facebook. mark themselves as safe. let their friend though they're safe. for those who are looking for loved ones, you can go on facebook to try to contact that person. and ask them if they're okay. the red cross, has said this is a very effective way of finding loved ones in situations like this where many people have vanished in kate yoes. >> fairly new device. smart device by facebook. check the morning headlines in the meantime. you can pretty much understand that this would be the headlines here. a times here in london. just with familiar images of the lady, injaerd. being helped there by the authority to explosion at manchester, concert, this other one here, guardian also, from the uk,

this morning this morning on "world news now" -- concert carnage. a deadly blast. after a pop concert by ariana grande. >> police suspect terrorism in the explosion. young fans seen on video running for safety. >> we heard a bang. and i had to run for my life. >> overnight frantic family members searching for loved ones as leaders react to what could be britain's deadliest terror take in a decade. >> complete coverage on this special edition of "world news now". >> announcer: from abc news, this is "world news now." we do say good morning to you everybody on this tuesday. what a rough morning to come to yo