A veteran NYPD sergeant was arrested for harassing a woman, authorities and sources said yesterday.

Mario Morales, 37, was busted Friday around 11:30 p.m. and charged with harassment and aggravated harassment.

Officials said Morales’ relationship to the alleged victim was unclear.

It wasn’t immediately known if the alleged harassment occurred once, or multiple times.

Morales, who joined the department 11 years ago, is assigned to Patrol Borough Bronx.