NAIROBI/LONDON: Ali Harbi Ali, the son of an ex-media adviser to a former prime minister of Somalia, has been arrested by British police under anti-terrorism laws following the killing of lawmaker David Amess, a source close to the investigation and British media said.

British lawmaker David Amess stabbed to death in church

Amess, 69, from Prime Minister Boris Johnson's Conservative Party, was knifed repeatedly as he met constituency voters in a church on Friday in Leigh-on-Sea, east of London. The killing took place five years after the murder of Jo Cox, a lawmaker from the opposition Labour Party, and has prompted a review of politicians' security.