Five British men in their 20s were arrested at RAF Fairford on suspicion of a suspected terror plot. Suspicious substances were found near the U.S.-operated air base. Police confirmed all suspects are British citizens. The arrests took place at RAF Fairford, an air base managed by the RAF. The suspects are all British men in their 20s. The incident occurred near the U.S.-operated air base. Iran has denied any connection in the plot. The five men were arrested on suspicion of a bomb plot. Explosive devices were detected near the air base. All suspects are confirmed to be UK individuals.