The Sun has its theory:
SEX GAME MYSTERY
Missing German DJ found dead with his head bound in plastic bag by duct tape ‘after sex game gone wrong with Thai hooker
A MISSING German tourist has been found dead with his head bound in a plastic bag and duct tape in a suspected sex game gone wrong after romping with a Thai hooker.
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Christopher Faust, 39, failed to turn up at work in Hannover, Germany, on May 16 sparking concern among his friends and relatives who called police and began searching for him.
Despite appeals for him to get in touch, the DJ had taken a secret holiday to Thailand and checked into a luxury villa in Krabi in the south of the country on June 7.
He was last seen alive in the morning on June 9 ordering breakfast to be sent to his room, which was the same day that housekeepers say they saw a "chubby Thai woman" leaving.
Hotel staff became concerned they had not seen him since.
They were horrified when they checked the property on Tuesday morning and found his naked body on the bed.
Christopher had a green plastic bag wrapped around his head which strapped in place with duct tape. There were also signs that he had recently ejaculated, according to police.