To help complete strangers after what authorities call an attack on the most vulnerable. Our team live on the scene, and a special edition of Good Morning America starts now. Good morning, america. Lets get right to that breaking news. You are looking live at the Manchester Arena in england where a suicide bomber set off an explosion in an Ariana Grande concert. Isis has now claimed responsibility. The concert had just ended when the explosion happened. 20,000 people were there in the arena. So many of them were children, just look at those pictures, young women, young boys, many of them probably going to the first concert of their lives. Heres what we know right now. At least 22 people killed, more than 50 injured and police say another attacker died at the scene. They believe they know who it was and no name released and a second person has been arrested. Around 400 Police Officers deployed overnight with the investigation. Ariana grande spoke out overnight tweeting, broken from the bottom of my heart. I am so, so sorry. I dont have words. It happened right at the end of the concert. Amy flew to manchester overnight. She is standing by, and our team of reporters is tracking every angle starting with our chief Foreign Correspondent terry moran on the scene in manchester. Good morning, terry. Reporter good morning, george. Manchester is a proud and usually bustling city. This morning it is eerily quiet, in shock and grieving for what happened just about a block down there at the Manchester Arena. Last night. Heres what we know know. Police confirming they have arrested a 23yearold man in connection with that bombingen and arrested someone else. All this after saying they believe the attacker himself was killed in this bombing. 10 33 p. M. Local time a blast erupted at the Manchester Arena after pop star Ariana Grande had closed a soldout concert before 20,000 of her fans. Everyone was getting up to leave and all of a sudden there was a big bang. Oh, my god. I thought it was gunshots and my life just flashed before my eyes. By the time we got to the top, there was smoke everywhere. There was blood on the floor and you just knew it was something more than what it was made out to be. Reporter as the explosion rocked the arena, confusion and pandemonium, people climbing over seats desperate to get out. Smoke started coming out. Everyone started to panic. People started streaming out and next thing is a big flash. And then a whoosh of air and then a smell in the air. Everybody is pushing, everybody is shoving, the shoes being lost, phones being dropped. We ran straight out the doors all the way down to the hotel and all i could hear was screaming, people crying. Everyone was just running everywhere. It was complete madness. Reporter while a p. A. Announcer tried to calm the panicked crowd just take your time and keep exiting the building. There is no problem here. Reporter outside mayhem as Emergency Personnel rushed to recover the 22 dead and help the 59 injured. Many concertgoers, mostly teenagers, young girls and their parents covered in blood and shrapnel. Pull it out quickly. Reporter you can sense the emotion in this town. The grief is palpable. These were their kids, everyones kids of course but the families who showed up at the stadium waiting, some having their prayers answered, others have not. And that has really hit home here in manchester. But it remains a city with a gritty solidarity. People are pulling together. Robin. All right, terry, thank you very much. Joining us now jessica and ellie, they were both at the concert last night and we are so sorry for what happened last night and thankful youre both doing okay. Jessica, how are you doing this morning . I havent slept. I havent eaten. Ive been on and off to be fair and i mean theyve just released the first name of the victim of one of the victims, and im pretty sure that i recognized her from a previous show, so im just i just feel numb because i cried so much over the past 12 hours. Its just been horrendous. We can only imagine what you must be processing. Ellie, how are you this morning . Im okay. Im just in shock. I was just really, really scared. Im now better. Jessica, can you tell us what you heard, what you saw last night . Ariana had just left the stage and it was the end of the show and as everybody was leaving they were leaving to walk up towards the stairs which take you to the entry of the arena to leave and everything seemed to be fine. Then there was just this loud, sickening bang and it made the floor shake, it was so like impactful and everybody around me just screamed and we just all ran and just didnt know what to do. We thought a bomb had gone off or something. Ellie, when did you first know something was wrong . When i stood up to leave i was going towards where the sound came from and i heard the massive bang and then everyone as fast as they can tried to run away and we were all screaming and crying and i just wanted to get out. Did you see people helping others . I know that there was somebody from arianas group that was on the stage that was trying to tell people to stay as calm as they could. Yeah, and somebody from her crew came out and was just telling everybody to remain calm and to just take the time as they were leaving. People were just doing the best they could under those types of circumstances. You know, many people are wondering, you know, such a big crowd, 20,000 there at that arena. Was there security . Did your bags have to be checked before you entered last night, ellie . Yes, only briefly like i thought it would be more like more security like the only like glimpse into my bag. There was no body search or anything. Anyone could have taken anything in. You experienced the same thing, jessica . I was really surprised actually because i actually saw bruno mars there like a couple of weeks ago. They had really like intensive searches on everybody, like they were getting fullon searches all over the body and when like i was obviously lining up to meet her they did exactly the same to me, just checked inside the bag and i was really shocked to be honest. And lastly, girls, anything that you want to say to people, this morning . I hope that you feel the prayers and the well wishes from everybody around the world and such a tragedy and for you so young, anyone to experience Something Like that, is there anything, jessica, you want to say . I just want to say thank you to everybody thats messaged us and has asked if were okay and were just so lucky were alive and the scariest experience of my life and just my thoughts are with the families who lost people last night. And our thoughts and prayers as well, jessica and ellie. Youre such brave girls. Thank you very much. Please take care. Thank you. All righty. And you see why people say it was an attack on the most vulnerable to target these young people like that. Yeah, you just see the horror in their faces and that explosion set off a moment of panic inside the arena yet people running for the exits. This morning some of the children and parents still searching for each other using social media to try to find their loved ones and amy is in manchester with their stories. Good morning, amy. Reporter thats right, george. Good morning to you. We are here in front of the scene of the attack. Manchester arena and this morning hundreds of families are desperately scouring hotels, hospitals and police stations all in search for their missing loved ones. This morning, a heartbreaking scene as hundreds of parents search for their children. Oh, my god. Reporter after an explosive device tore through Manchester Arena. This is my daughter olivia. Reporter Charlotte Campbell fearful because she has not heard from her 15yearold daughter since the concert. Please, somebody must have seen her at some point. Please just let me know that youve seen her. Reporter children as young just 8 years old. At least 50 teen inchers taken to a hotel while authorities scrambled to find their parents. So there was a lot of screaming and a lot of parents trying to keep their families together. Reporter this young girl seen here wrapped in a blanket escorted to safety by a police officer. There were lots of children there without parents. There was no one to calm them down so everyone was just screaming and crying and pushing. Reporter many taking to social media posting pictures of the missing, asking for help. For some the social media pleas are working. This tweet indicating all of these people have been found, lets keep going. And another tweet, one mother saying this morning she is relieved to have her daughter back home. In the middle of all of this fear and chaos there has been a big encouraging sign of people coming together. After the fallout of this tragedy. The roomformanchester is one of the top trends from overnight because thousands of people here stranded and the trains were shut down. Thousands of people here from manchester opened up their homes, sofas, beds and said you can sleep here. Taxi drivers offered free rides to get people to hotels and hotels offered up free rooms. A beautiful sign amid such horrific tragedies. Back to you. George. Thank you. We are joined by Joseph Harries at the concert last night. Thank you for joining us. Just take us back to that moment. What did you see . What did you hear when that blast went off . It just panic and hysteria to be honest, george. People were screaming, people were running. To be honest, people were just trying to get out of the arena as fast as they could. You were inside the arena . I was. I was directly in front of the stage at the heart of the arena as you would. I had exactly the same distance to get out of any of the doors. Did you have any idea what happened . When it happened, i had no idea. I thought perhaps there was a malfunction in some of the technical things because obviously there was lighting and lasers and everything throughout the show. However, once people started screaming and running back into the arena, i gathered sort of a prospect as to what had happened. People were running back into the arena. You were trying to get out. What did you do next . Well, i had my best friend with me. I grabbed hold of her wrist and told her to never let go of me in that moment. We just ran and jumped over chairs, railings to try to get out of these doors. We had to force open some doors that wouldnt open because people were trying to get to the entire capacity of the 21,000person arena was trying to get out of one exit which had been allocated by the security themselves, which was with a load of preteen boys and girls, it was a recipe for disaster from the beginning. How long did it take you to get out and what did you see when you got out of the arena . It felt like an eternity to be honest. It couldnt have been more than two, three minutes until from in our seats to outside of the arena itself. However, it felt forever. We tried our hardest to get past because obviously in that moment you obviously can serve people around you, however, youre your main priority. As long as youre safe and youre fine in that minute its good review, and when you find what youre looking for at the end and when you find out like i did myself about the injuries and the fatalities, it really dawns on you. So you didnt see any of the injuries or fatalities when you left the building . Not personally i didnt. I didnt have a chance to see any of the injuries or fatalities. However, my friend did who was also in the concert that evening. He lives here in manchester and he was there with one of his friends and he had told me he had seen some a girl covered in blood and she had bandages around her neck by paramedics outside. He said it was traumatic and a horrendous experience for him. When did you know you were safe . The minute i got back to my hotel. Until then even walking out, walking out the arena surrounded by people, you get into this sort of instinct feeling where youre not safe until you are sort of enclosed in your own personal environment. Were glad youre okay. Joseph, thanks for joining us this morning. Thank you very much. He was so clearheaded in such a disorienting time and we are now learning one of the names of one of those killed in the blast. Georgina callander from Runshaw College in england. You see her there with Ariana Grande. So much reaction as can you imagine including from the president. We saw President Trump reacting this morning to the attack while traveling in israel and our chief White House Correspondent jon karl is with him there. Good morning, jon. Reporter good morning, robin. Just a short while ago the president spoke over the phone with british Prime Minister theresa may offering his condolences and support for the british people. He called this a horrible morning of death for innocent young people and he made his remarks condemning the attack while he was standing next to Palestinian Leader mahmoud abbas. In doing so he offered a new label for terrorists and for whoever was responsible for this attack, losers. We stand in absolute solidarity with the people of the united kingdom. So many young, beautiful, innocent People Living and enjoying their lives murdered by evil losers in life. I wont call them monsters, because they would like that term. They would think thats a great name. I will call them from now on losers because thats what they are. Theyre losers. Reporter the president s choice of words was quite deliberate. As you can see he seemed to be reading, and its striking how different this was from the way we have seen donald trump respond to previous major terrorist attacks. There was no reference to radical islamic terrorism, no talk of profiling. He did issue a call for unity in fighting terrorism and what he said, until the wicked ideology is forever obliterated, very tough words, robin, but unlike what weve seen from him previously, there was no rush to judgment and no suggestion whatsoever that islam was responsible, robin. Jon, thank you very much. Weve seen the effects of what happened in manchester in times square. Security being stepped up here and across the country. Lets go to our senior justice correspondent Pierre Thomas with the latest on that. Good morning, pierre. Reporter george, good morning. With isis claiming responsibility for the attacks in manchesters officials are taking no chances despite the fact no plot has been identified in the homeland. Today Homeland SecurityOfficials Say americans can expect to see increased security in and around Public Places and events. New yorks governor put out a statement directing state Law Enforcement officials to step up security patrols at highprofile locations across new york including airports, bridges, tunnels and mass transit systems. To confirm its isis theyll do a full background check and try to reconstruct the bomb as to who did it. The concern is high here at home for the potential of copy cats. George. Apparently targeting Young Children and families, thanks very much, pierre. Social media helped reunite concertgoers with their loved ones overnight. Take a look at this post. A girl searching, her name heather who is wearing a yellow hoodie and within a few hours a stranger tweeted back saying heather was safe and sound and they took her in to charge her cell phone and this was just one of the reunions made possible by twitter and the news about heather is getting more than 150,000 retweets and just one of the great uses of social media. We heard amy talking about that as well earlier in her report. Ginger is on her way back from the bahamas. Rob is here with a check on the weather. Rob. Hey, good morning, robin and everybody. Looking at the storms that produced 60mileanhour winds here. Jacksonville florida. And the damage to the gas station and the car. A tornado watch issued for parts of Florida Panhandle and these storms continue to rumble up this way. Some will bring rains to south florida but other places will see flood watches. Is. Hello, im abc 7 news meteorologist mike nicco. Becoming sunny away from the coast, the temperatures taper again today. Our coolest afternoon is thursday, friday, and saturday and well bump back to warmer weather for the back half of the holiday weekend. Today still 90s but mainly in the east bay valleys. North bay and south bay 80s. Upper 50s to low 60s from the coast into san francisco. Look at the cloud cover tonight. Temperature in the 47 to 56 degree range. Some rain will try to get towards the north east and heat building up east. More on that. More on the terror attack in manchester. Witnesses coming forward to speak out this morning. Brian ross here with more on what were learning about the investigation in that threat to soft targets. When did anyone start calling this salad . At panera, a good salad is so much more than a bowl of something green. More than an obligation to be good. More than just something you have on the side. More than just one flavor, or texture, or color. A good clean salad is so much more than green. And with panera catering, more for your event. Panera. 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