Two men have been re-arrested as part of an investigation involving RAF Fairford, according to counter-terrorism police.
The men are being held on suspicion of assisting a foreign intelligence service. Police have not provided further details about the allegations or identified either suspect.
The investigation is focused on RAF Fairford, although the supplied information does not give details of when the arrests took place, what activity is being examined or whether any charges have been brought.
The latest development is the re-arrest of both men. The investigation remains ongoing, with no further information available at this stage.