As investigators hunt for accomplices of a suicide bomber and Britain's prime minister warned another attack could be ``imminent,'' thousands of people packed the streets of Manchester Tuesday in a defiant vigil for victims of Monday night's blast.
The explosion at an entrance of the Manchester Arena as fans were leaving an Ariana Grande concert killed 22 and wounded 59.
Authorities have identified the dead bomber as 22-year-old Salman Abedi and arrested another suspect.
Britain has raised its terror-threat level from severe to critical, meaning soldiers could be deployed instead of police at public events.