The attempted abduction of a serviceman from RAF Marham five months ago is "quite possibly" nothing to do with terrorism, police have said.
The man, who was out running close to the base in West Norfolk in July, managed to escape his two attackers who'd tried to push him into a van.
The kidnap attempt was initially believed to be terrorist-related.
Police recieved 500 calls from the public after e-fits of the suspects were released.
Officers now say they are satisfied that there is another reason for the attack - possibly robbery or road rage.
The inquiry has cost police £71,000.