On 22 May 2017, an Islamic terrorist carried out a suicide bombing following a concert by the American singer Ariana Grande at the Manchester Arena. The bomb killed 23, including the attacker, and injured over 800 with many being children and teenagers. It was the deadliest terrorist attack and the first suicide bombing in Britain since the 7 July 2005 London bombings. The attack caused worldwide condemnation and the changing of the UK's threat level to "critical" for the first time since 2007. Many of the injured and dead were from the Greater Manchester area and neighbouring parts of Cheshire and Lancashire.