A Thai police officer dressed as a ‘BDSM sex wrestler’ named Big Bear to entrap a suspect wanted over alleged sex crimes.

Police captain Ponlawat Nakthomya and his colleagues had been hunting Su Xing Rui, 31, but were unable to pin him down in Bangkok, Thailand.

A female decoy was initially used but Su, from China, pulled out and said he would only meet if a bizarre fetish was fulfilled by a heavy-set wrestler.

Mr Ponlawat bravely agreed to the dangerous mission.

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Hidden camera footage shows the dramatic moment Mr Ponlawat opened the door in a black singlet and a Satan mask – prompting an excited howl from the suspect.

But seconds later, armed police hiding in the wardrobe leapt out to bundle Su onto the bed and handcuff him.

Adding insult to injury, cops even frogmarched him out to the truck using a leather dog collar he had brought for the romp.