Canadian victim killed in London attack named as Christine Archibald

Trump also spoke with British Prime Minister Theresa May to offer condolences and offered Washington's "full support" in investigating and bringing the perpetrators to justice, the White House said in a statement. Among the victims, there was a Canadian man, as confirmed by Prime Minister Justin Trudeau. It was eight minutes from the moment police were notified about the attack to when the three men were killed, police said.

Watch Ariana Grande and Coldplay Cover Oasis at 'One Love Manchester'

Grande's manager Scooter Braun appeared on stage wearing a black One Love Manchester baseball cap with the pink logo for the concert on the front to introduce the singer on her return to the city less than two weeks after she said she was "broken" by the attack.

Justin Bieber fights back tears on stage at 'One Love Manchester'

There were too many poignant moments to count, from Grande singing " Where Is The Love? " with the Black Eyed Peas to Coldplay frontman Chris Martin's cover of " Don't Look Back in Anger ", a rock anthem by Manchester band Oasis. "Today's One Love Manchester benefit concert will not only continue, but will do so with greater goal", said Scooter Braun, Grande's manager, in a statement early Sunday.

Ariana Grande makes emotional return to stage after terror attack

He then shared a message from a 15-year-old named Adam, who Braun had met when visiting victims of the attack in the hospital alongside Grande a few days prior. A particularly sweet moment came when Grande joined members of the choir of Parrs Wood High School , located in a Manchester suburb, to sing "You Are My Everything ".

How the London terror attack unfolded

British counter-terrorism police on Sunday arrested 12 suspects after a raid at a home of one of the terror attackers in Barking. Saudi Arabia and some of its regional allies have already been implicated in support for Takfiri terrorism , now wreaking havoc in Iraq and Syria.

Ariana Grande to Duet With Boyfriend Mac Miller at Manchester Benefit Concert

The concert took place despite - in spite of, actually - a terror attack in London on Saturday night that killed seven. Miley Cyrus , Justin Bieber , Katy Perry , Coldplay , Usher, Pharrell, Little Mix , Robbie Williams , Black Eyed Peas , Niall Horan and Take That are all part of the star-studded line-up.