Manchester Arena blast: What we know so far

Here is what we know so far about the terrorist attack at Manchester Arena.

• An explosion at an Ariana Grande concert in the Manchester Arena last night has been called a terror attack by British Police.
• The attack occurred at around 10.35pm last night.
• 22 people have been killed and 59 have been injured in the incident.
• It has been confirmed that there are children among the dead.
• Police have said they believe a lone male attacker, who died in the blast, was carrying an improvised explosive device which he detonated.

Update 8am: 22 people have been killed and 59 have been injured in the blast