A 22-year-old man from London has been arrested in connection with an incident at RAF Fairford.
He is the seventh person taken into custody by counterterrorism police investigating the case.
The arrest follows an incident at the UK air base last month.
Authorities have not released further details about the man or the charges he may face.
Counterterrorism officers continue to investigate the circumstances surrounding the event.
RAF Fairford is a Royal Air Force station used primarily by the United States Air Force.
The base has been the focus of ongoing security inquiries since the incident occurred.
Police have not confirmed whether additional arrests are expected.
The investigation remains active as authorities gather evidence and interview witnesses.
