British police have arrested a dual U.K.-Iranian national on suspicion of plotting a terror attack following a security incident at a U.S.-run air base on the weekend.

British counter-terrorism police said the 27-year-old dual national was arrested in London as part of the investigation. A second British man, aged 26, was also questioned under caution, while detectives carried out searches at two properties.

Police on Thursday arrested a dual British-Iranian national on suspicion of plotting a terror attack following a security incident at a U.S.-run military air base in England that British authorities h

British police have arrested a dual UK-Iranian national on suspicion of plotting a terror attack following a security incident at a U.S.-run air base on the weekend.

Iran denied involvement on Monday in a suspected plot to attack a British airbase used by the United States to strike Iranian sites, and police said five men arrested ​over explosives and terrorism offences were British nationals.