British Prime Minister Theresa May has raised the country's terrorism alert to critical — the highest level, meaning an attack is imminent. May addressed the country Tuesday, one day after a suicide bomber blew himself up at a Manchester concert hall, killing 22 and wounding more than 50. British police are urgently trying to determine if the bomber acted alone or was part of a larger terror network.
The man who blew himself up following an Ariana Grande concert at the Manchester Arena has been identified as Salman Abedi, police said. Greater Manchester Police Chief Constable Ian Hopkins identified the 22 year-old Abedi as the alleged attacker, but provided no other details. The Islamic State terrorist group has claimed responsibility for Monday's blast that killed at least 22 people and injured 59 others. The group said "a soldier of the caliphate" was responsible for the attack on people IS described as "crusaders." Many of those killed and injured in the blast were children and teenagers, police said.