Heightened security at RAF Marham

Police said they "cannot discount terrorism" as the motive for the "attempted kidnap" of a serviceman near an RAF base.

Officers said he was approached by two men as he was out jogging near the married quarters at RAF Marham in Norfolk on Wednesday.

He was threatened with a knife and both men tried to drag him into a car but the serviceman managed to fight them off, said Norfolk Police.

The victim was unhurt, and the two men drove away in a dark vehicle.

Norfolk Police are working with the RAF and have been carrying out searches for the knife and the car.