Twenty two people were killed and 59 injured when an explosion went off at an Ariana Grande concert in Manchester last night (May 22).

It happened at approximately 10:30pm in the foyer of the Manchester Arena, just moments after Ariana had walked off stage finishing her set.

In a statement released by Greater Manchester Police at 7:35am, Chief Constable Ian Hopkins explained that this is being treated as a terrorist incident.

“We have been treating this as a terrorist incident and we believe, at this stage, the attack last night was conducted by one man. The priority is to establish whether he was acting alone or as part of a network.

“The attacker, I can confirm, died at the arena. We believe the attacker was carrying an improvised explosive device which he detonated using this atrocity," he said.

Ariana’s manager Scooter Braun has confirmed that the singer is safe, whileshe also tweeted her shock at the situation.

“Broken. From the bottom of my heart, i am so so sorry. Idon't have words,” she wrote.

Following the events video footage from inside the arena when it happened has emerged, showing people running when they heara loud bang.

One attendee, Josh Elliot, told the BBC that there was chaos and confusion when people covered in blood began running.

He said: "She finished her last song .. and we heard like a really basey bang, and all I can remember is just everyone ... was just running out... people were covered in blood, some people were having a fight, it was quite scary."

An emergency telephone number has been set up following the attack, it is: 0161 856 9400.