At approximately 10.30 pm on 22 May 2017, 22-year-old Salman Ramadan Abedi detonated an improvised explosive device among a concert-going crowd at Manchester Arena.

The device was concealed in a backpack carried by the bomber and detonated in the arena foyer at the end of the concert.

The explosion killed 23 people, including the bomber, and injured 250.

The Manchester Arena attack demonstrates that Western countries remain vulnerable to terrorism that exploits radicalised local nationals, trained and directed from overseas, and will target mass gathering events.