On 22 May 2017, an Islamist extremist suicide bomber detonated a shrapnel-laden homemade bomb as people were leaving the Manchester Arena following a concert by American singer Ariana Grande. Twenty-three people died, including the attacker, and more than 800 were injured, some of them children. Several hundred more suffered psychological trauma. The bomber was Salman Ramadan Abedi, a 22-year-old local man of Libyan ancestry. After initial suspicions of a terrorist network, police later said they believed Abedi had largely acted alone but that others had been aware of his plans. In March 2020, the bomber's brother, Hashem Abedi, was found guilty of 22 counts of murder relating to the attack.