
Several protesters have blocked the main entrance of a military base used by the US Air Force (USAF).
Suffolk Police said it was called just before 07:00 GMT to reports of a "small protest" outside RAF Lakenheath, in Suffolk.
According to the protest group No More Bloody Wars, the demonstration is against "illegal wars" involving the USA and timed to coincide with Tuesday's midterm elections.
The US Air Force has been approached for a comment.
Ten protesters used heavy-duty locks to attach themselves to a car and to each other outside the base entrance.
The group called on the British government to shut down American bases in the UK, to remove what it said was complicity in conflicts in the Middle East.

It also expressed concern about the possibility of nuclear weapons returning to the base.
The F-35A Lightning II aircraft is certified to carry the B61-12 thermonuclear weapon.
"By obeying and complying with the demands of the US military complex, the UK has become very closely tied with the nuclear security strategies imposed by the US," the group said.

The Ministry of Defence (MOD) said the matter was one for the US military to comment on.
In April, in a response to a similar protest, the MOD said the US had been authorised to use British military bases for specific defensive missions to destroy Iran's missile capabilities.
A spokesperson added that Iran was "threatening British people, bases, and our partners in the region".
Police said the protest and obstruction on the road outside RAF Lakenheath on Monday had led to the A1065 Brandon Road northbound being partially blocked, with queueing traffic.
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