Transcript for Chaos after reports of explosion at Manchester Arena

Just horrific scene playing out in Manchester England an explosion at an Ariane grundy concert at the Manchester arena. These are the images coming in at this hour authorities have confirmed multiple fatalities and many injured. Police had treated they were responding to reports of an explosion early on concert goers racing to get out after fans reported a loud noise and then the lights went up. ABC's chief foreign correspondent Terry Moran leads us off tonight. Panic at the Ariane grundy concert in Manchester tonight. Just is the show was standing about 10:45 PM the lights go on and people. Three towards the exits after a huge explosion rocked the arena. I on this dash cam video taken nearby looked to the left you see the flash. And here's a bank. The driver instantly fears the worst know what an eyewitness described the moment. I was on police and an explosion went off but it could even be treated this set to those when Michael. Around about thirty people got that B virtual mall that might have been unconscious opened a lot of good solid piece. This scene outside the arena on a mass exodus people shaken and confused some helping the injured. Others simply holding onto each other. The rocket children live that without pat and it would no lumped calmed them down there but it was just. Screaming. And cry ink and pushing. People running at the nearby trains their. Manchester arena officials later saying in a tweet that the incident took place outside the venue and a public space bomb disposal units were later seen outside the arena. The man just arena's one of Britain's main concert and sports venues just north of downtown Manchester the UK's second largest city. Manchester police responded quickly and massively shutting down streets and subways urging people to stay away from the arena. Lots of odd response bound. And police were all over the place. Ambulances swarmed the scene so far nineteen people have been confirmed dead. With around fifty others injured tonight the FBI says that they are aware of the incident in the Department of Homeland Security is actively monitoring the situation. Tonight representatives for Arianna grundy are saying the singer is OK and made it out of that arena safely. Manchester police are saying they are treating this incident as a possible terrorist incident although as of right now. There's been no claim of responsibility.

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