Transcript for Deadly blast causes chaos inside Manchester Arena

This morning some parents are searching for their children and learning new details about the attack. Let's go back to Amy who is there in Manchester with the latest, Amy. Reporter: Police in Manchester are now confirming that a 23-year-old man has been arrested in connection with the attack here last night. His role in the bombing is not yet clear but authorities say the attacker, an apparently suicide bomber set off an improvised explosive device at the end of the Ariana grande concert killing 22 people and injuring 59 others. Childrens are among the dead and frantic parents spent the night trying to locate their children who were attending the concert. There has been no claim of responsibility for this attack yet which is the deadliest in the uk since 2005. This morning, president trump calling the British prime minister to offer his condolences and earlier he called those responsible for such an attack on innocent young people, quote, evil losers. We spoke to many people who were here last night who described the terrifying moments amid the chaos and the confusion. Well, the lights had come on and assumed concert is over so let's go and all of a sudden we were like leaving to go down the steps and then we heard the explosion. And then everyone started panicking saying there is a bomb and did think about it. It was a massive bomb and louder than a firework and we did feel a shake when we were about to leave the arena and didn't know what to do because obviously people all were crying and just looked at ocho oth like what do we do, do we go out, do we stay here? We went out the doors and saw smoke everywhere and looked to my right and there was a decomposed body, all I could see was flesh like they had blown themselves up. We started crying. We didn't know what the hell was happening. It all happened really fast as well and there was another bang but we weren't sure what it was. It wasn't as loud and started freaking out and -- Shoving each other like trying to get out. There were thousands of children. That's the experience, such a young age seeing all those dead bodies and it was horrible. British prime minister Theresa may say authorities believe they have attaidentified the attacker. Mi5 say they are revealed by the disgusting terrorist attack and say their hears go out to the families and victims of that attack. That is rare. We'll get more now on the

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