Man arrested on suspicion of terror offences following London mosque attack

London police say a 47-year-old man has been arrested on suspicion of commission, preparation or instigation of terrorism including murder as well as attempted murder after a car plowed into a crowd of pedestrians near a north London mosque.

The man, who is in custody at a south London police station, was arrested earlier on suspicion of attempted murder.

The Metropolitan Police said in a statement that the man was detained by members of the public at the scene of the attack early Monday.

Authorities say a residential area in Cardiff, Wales, is also being searched.

Deputy Assistant Commissioner Neil Basu says: ''This is being treated as a terrorist incident and is being investigated by the Counter Terrorism Command.''