A man arrested on Thursday (1 October) in connection with events at RAF Fairford on Sunday (27 September) has been released on bail.
The 25-year-old man, a dual UK/Iranian National, was arrested in the Borough of Westminster, London, on suspicion of preparation of terrorist acts under Section 5 of the Terrorism Act 2006.
Searches of two properties in the same area have now concluded.
The investigation into the circumstances surrounding events in Gloucestershire is continuing.