British police have carried out overnight raids on a premises in Birmingham, and arrested a number of people, Sky news reported Thursday.

The raids are linked to the terrorist attack at Westminster Bridge and the Houses of Parliament in which five people including the assailant were killed and dozens more injured.

Police chief Mark Rowley said police know the identity of the attacker but no information will be released to the public.

The attack began when a speeding car ran down pedestrians on Westminster Bridge before crashing into the railings surrounding Parliament.

The driver then entered parliament grounds and fatally stabbed a 48-year-old police officer before being shot dead himself.

Source: MENA