British investigators are probing whether a suspected plot to attack RAF Fairford, a base hosting US forces and used for Middle East missions, was directed by Iran or an Islamist group. Five British men in their early 20s from London were arrested hundreds of yards from the western England base; police have not established a motive but security officials say US B-1 bombers may have been the target. Officials cautioned it is too early to determine Tehran’s involvement; Iran earlier warned Britain

British investigators are probing whether a suspected plot to attack RAF Fairford, a base hosting US forces and used for Middle East missions, was directed by Iran or an Islamist group. Five British men in their early 20s from London were arrested hundreds of yards from the western England base; police have not established a motive but security officials say US B-1 bombers may have been the target. Officials cautioned it is too early to determine Tehran’s involvement; Iran earlier warned Britain against permitting US strikes from UK bases.