Ariana Grande has flown home to Florida after a suicide bomber killed 22 people at her Manchester concert.
The 23-year-old pop singer, who said she was left "broken" by the terror attack, is yet to confirm if her two shows in London this week will go ahead.
The US star returned to Boca Raton Airport by private jet on Tuesday afternoon, according to MailOnline.
Less than 24 hours earlier the blast at Manchester Arena killed concert-goers including an eight-year-old girl and injured a further 59 people.
The O2 arena, where she is due to play on Thursday and Friday, said that the venue is in touch with Grande's promoters.
Take That postponed their Liverpool and Manchester tour dates in the wake of the terror attack.
A statement from the band said their shows this week would not go ahead "out of respect" to those affected.
Grande's Dangerous Woman tour was also due to visit Germany, Switzerland, Brazil, Japan and Thailand before coming to a close in Hong Kong in September.
There has been no official message from Grande's management about whether or not her tour will continue.
Manchester Arena explosion aftermath - In pictures
Britain is now on critical terror alert with military troops set to bolster police forces amid fears Manchester attacker Salman Abedi did not act alone.
Prime Minister Theresa May has raised the threat level to the highest possible rating, meaning another atrocity is expected imminently.
She said a "wider group of individuals" could have been involved in the Manchester Arena blast rather than just suicide bomber Abedi.
In a sign of the increased threat, the military could be deployed to support armed police officers.
Mrs May will chair a meeting of the Government's emergency Cobra committee at 9.30am on Wednesday.
Olivia Campbell, from Bury, Greater Manchester, was among 22 people killed by suicide bomber Abedi.
The schoolgirl, along with eight-year-old Saffie Roussos and teenager Georgina Callander, were among the first of the terrorist's victims to be named.
Tributes were also paid to 26-year-old John Atkinson from Bury, who was named by friends on Facebook as a victim.
Two further victims of Britain’s worst terror attack since 7/7 were named as friends Lisa Lees, 43, and Alison Howe, 45, both from Royton in Oldham.
Kelly Brewster, from Sheffield, South Yorkshire, also died trying to shield her niece from the blast.
