A number of concerts have been postponed following the suicide bombing at an Ariana Grande gig at Manchester Arena.
At least 22 people were killed and up to 59 injured.
Police say a man, who died in the blast, detonated an explosive device in the foyer of the arena.
The O2 Arena in London says it’s in contact with Ariana Grande’s tour promoters about whether she’ll perform on Thursday and Friday.
“We are shocked and saddened by the terrible tragedy in Manchester. Our thoughts and prayers are with those affected and their families.
“Ariana is due to perform at The O2 on Thursday and Friday and we will advise as soon as we can as to the status of those shows.”
But in a reply from a fan wanting to know whether the London gigs are going ahead, O2 customers services seem to suggest the performances have been postponed already.
Take That have postponed their gig in Liverpool on Tuesday night.
The group is still due to play at Manchester Arena on Thursday, Friday and Saturday.
Rock band Kiss are due at the venue next Tuesday.
After that there’s a WWE event – NXT Live! – on 6 June and then Kings of Leon on 9 June.
Elsewhere in Manchester, Courteeners are due to play a big gig at Old Trafford on Saturday. Their gig in Halifax goes ahead on Tuesday.
Live Manchester music venue Soup Kitchen says a gig on Tuesday night will go ahead.
Soup Kitchen said the thought of people dying at a concert had hit them hard.
But the statement said after much thought staff at the venue, in the city’s Northern Quarter, were working on making the show happen, which is being headlined by New York’s White Hills.
Night and Day is also not planning to cancel any performances.
The Manchester Academy complex of gig venues at the city’s university doesn’t have any shows scheduled for Tuesday.
Radio 1’s Big Weekend is happening on Saturday and Sunday in Hull, which is 100 miles away from Manchester.
The BBC station’s released this statement: “Our thoughts are with the victims and the families of those affected by the tragic events in Manchester.
“The health and safety of everyone involved in Big Weekend is now our primary focus and we are carrying out a full assessment, with the police and our partners, of every aspect of the festival.”
Other events to be postponed are Debbie Harry’s performance at the Round Chapel in Hackney, east London, and a charity evening at the Comedy Store in Manchester has been moved while Royal Blood have postponed the day tickets go on sale for their European & UK tour dates.
Jason Manford and John Bishop’s charity gig this Saturday at The Lowry in Salford has been postponed until October.
Iron Maiden say they’re shocked by the events in Manchester but won’t be cancelling any gigs.