Armed police have arrested a teenager in north London on suspicion of terrorism, Scotland Yard said.

The 18-year-old was detained at 12.10am on Friday by officers from the Metropolitan police’s counter-terrorism command.

He was being held in custody at a south London police station on suspicion of preparation of terrorist acts.

A police spokesman said: “The arrest took place in the street in the north London area and was carried out with the assistance of armed officers.”