Metro

‘Dirty 30’ cop rob bust

A disgraced ex-cop convicted in the NYPD’s infamous “Dirty Thirty” scandal nearly two decades ago was charged yesterday with swiping a wad of cash from a woman in Chinatown, sources said.

The victim told cops she dropped a plastic bag holding $3,000 at about 1:05 p.m. on Canal Street and that a man grabbed it and fled into a building at 79 Chrystie St.

Former Harlem cop Russell Litwenak, 68, identified himself as an officer and pretended to come to her aid. But then he reached into her purse and yanked out another $300.

Litwenak and the other man, who cops believe was his accomplice, ran toward FDR Park.

The woman screamed that she had been robbed, and good Samaritans held Litwenak until cops arrived. The other man got away with the $3,000.

Litwenak was charged with robbery and criminal impersonation of a police officer.

In the early 1990s, he was among dozens of crooked cops assigned to Harlem’s 30th Precinct accused of robbing drug dealers and selling narcotics. He was convicted of burglary.