An off-duty NYPD cop was arrested for stealing his girlfriend’s furniture and then threatening her with his gun, authorities said Monday.

Sem Belmont was arrested Sunday evening for the incident that happened back in June at his girlfriend’s home in Dyker Heights, Brooklyn.

During the fight, Belmont allegedly took several pieces of furniture from the house. He also threatened the woman with his service weapon as he did so, cops said.

Sem, who joined the NYPD last year, was charged with petit larceny and menacing.

He has been suspended without pay, officials said.