Twenty-two people, including children, have been killed and 59 injured in a suspected suicide attack at Manchester Arena.
The blast happened at 22:35 BST on Monday at the end of a pop concert by the US singer Ariana Grande.
Greater Manchester Police said the lone male attacker, who died in the blast, was carrying an improvised explosive device which he detonated.
Relatives are using social media to hunt for missing loved ones.
Source: BBC News