WHO DARES WINS Britain’s most famous UFO mystery was actually just SAS soldiers pranking the Americans, sleuth claims

Panicked American marines reported the close encounter to top brass after spotting unexplained lights hovering in Rendlesham Forest in 1980

A GROUP of SAS pranksters were behind Britain’s biggest UFO mystery, an amateur sleuth has claimed.

Panicked American marines reported the close encounter to top brass after spotting unexplained lights hovering in Rendlesham Forest in 1980.

But a British X-Files expert told the Daily Express the incident was an SAS practical joke after the Americans took one of theirs squads hostage.

The group were caught testing the security of RAF Woodbridge – where the Marines were stationed – and were subjected to a brutal interrogation.

They claimed they were beaten up by their captors – who dubbed them “unidentified aliens”.

They were released 18 hours later – but were reportedly seething at the slur.

Alien fanatic Dr David Clarke said: “After their release, the troopers made no complaint at their rough treatment but were determined to get their own back on the USAF.

“In particular, their repeated characterisation as ‘aliens’ sowed the seeds of a plan.

“Lights and coloured fl ares were rigged in the woods and black helium balloons were coupled to remote-controlled kites.”

An alleged SAS source wrote to Dr Clarke explaining the prank.