At least 19 people were killed and about 50 others were injured in a suspected suicide bombing Monday night after an Ariana Grande concert at Manchester Arena in England.

Greater Manchester Police are handling the situation as a terror attack.

Police said the explosion occurred as the concert ended at about 10:35 p.m. local time (4:35 p.m. CST), catching people as they exited.

Here's the timeline from the Associated Press:

1:20 a.m.

Police said the incident started at 10:35 Monday night at an Ariana Grande concert.

Emergency vehicles were on the scene helping the injured and bomb disposal units were later seen outside the venue.

There was mass panic after the explosion at the end of the concert, which was part of Grande's The Dangerous Woman Tour.

1:05 a.m.

Bomb disposal units were seen at Manchester Arena after an explosion during an Ariana Grande concert.

They were called after reports of an explosion that police said caused fatalities.

There were few immediate details and trains into the area were suspended.

A representative of Grande's US record label says the singer is OK and they are investigating what happened.

11:55 p.m.

Police says there are "a number of fatalities" after reports of an explosion at an Ariana Grande concert in northern England.

Police advised the public to avoid the area around the Manchester Arena Monday night.

There were no immediate details of what happened during the concert by the American singer.

Video from inside the arena showed concertgoers screaming as they made their way out amid a sea of pink balloons.