Islamic State claimed responsibility for Monday’s deadly attack at the Manchester Arena and said it was carried out with an explosive device planted at the concert, according to a statement the group posted on Telegram.

“One of the soldiers of the Caliphate was able to place an explosive device within a gathering of the Crusaders in the city of Manchester,” the statement said.

Meanwhile, world leaders condemned the deadly attack and extended their condolences to the victims and their families.

US President Donald Trump extended his condolences to the victims of the Manchester suicide bombing and said those behind the attack were “evil losers.”