London police arrest more suspects over bridge attack

London police say counter terrorism investigators have searched two homes and detained "a number" of people suspected of some connection to the three men who swerved a van into pedestrians on London Bridge, then went on a knife rampage nearby.

Seven people died on Saturday and dozens were injured, 21 of them critically, in the attack.

The Islamic State group has claimed responsibility.

London's police chief has said the attackers have been identified, but the names have not been officially released.

Metropolitan Police Commissioner Cressida Dick told Sky News on Monday she would not release further details in what she described as a fast-moving investigation, not would she say whether authorities were familiar with the men ahead of the attack.