The Manchester suicide bomber who killed 22 people at a pop concert venue packed with children likely did not act alone, a minister said on Wednesday as soldiers were being deployed to key sites to help prevent further attacks.
The official threat level in Britain was raised late on Tuesday for the first time in a decade to its highest level, "critical", meaning an attack could be imminent.
Interior minister Amber Rudd said up to 3,800 soldiers would be deployed on Britain's streets, taking on guard duties at places like Buckingham Palace and Downing Street to free up police to