A plainclothes cop’s legs were mangled last night in a horrific accident that left him pinned at the knees between two vehicles during a traffic stop in Brooklyn.

The unidentified detective had pulled over a black vehicle with four men inside and was standing behind the car when a white van rammed into him, crushing his legs and leaving pools of blood in the street.

Mora said he heard a loud sound from outside around 10:30 p.m. When he looked out, he saw the officer pinned between the bumper of a white van and the car the cop pulled over.

The four men in the front vehicle stayed at the scene, as did the driver of the white van.

Police said there were no arrests.

The cop was rushed to Kings County Hospital in serious condition and later transferred to Bellevue where he underwent surgery.

(Source: NY Post)