MANHATTAN — An off-duty correction officer was arrested Sunday for threatening another driver with a loaded gun in a Harlem parking dispute, police said.

Robin Mervin, 29, a four-year veteran of the Department of Correction, blocked the other driver, whose identity wasn't immediately released, from a parking spot and then pulled her gun from a holster and pointed it at the other driver, NYPD officials and reports said.

The other driver "feared for his safety," prosecutors said.

The victim called 911 and Mervin was arrested for criminal possession of a loaded firearm and menacing, police and reports said.

She was arraigned Sunday and released, records show. She's due back in court on June 20.

Mervin began working for the DOC on April 26, 2012, according to an agency spokeswoman.

"The vast majority of correction officers perform their duties with the highest level of integrity and [DOC Commissioner Joseph] Ponte has zero tolerance for those who don’t,” the spokeswoman said.

She said she can't release information about disciplinary actions Mervin may face because of civil rights laws.

Mervin's attorney, Peter Troxler, declined to comment.