An off-duty cop was charged Monday with punching his 71-year-old neighbor and then dragging her out of the elevator of their Brighton Beach apartment building, a police source said. 

The officer, Vladimir A. Radionov, 46, was charged with several offenses, including second-degree assault and harassment, sources said. Bail was set at $5,000. 

Radionov, who has been a police officer for 11 years, got into an argument with the woman about the woman’s dog at about 8:30 a.m. on Sunday, according to sources and the criminal complaint. He allegedly hit her on the back of her head, her neck, and her back, according to the complaint.

He was arrested later that night. 

Attorney information for him was not immediately available. Radionov’s next court appearance is scheduled for Aug. 10.