An off-duty police officer was reportedly shot and wounded by his girlfriend's ex-boyfriend on Friday morning, according to the New York Post.

Police responded to a 911 call from a woman who said that she had been shot by her boyfriend. When police arrived to the apartment—finding the door locked—they heard multiple gunshots inside. When the police entered, they discovered the woman dead with two gunshot wounds to the head.

A 47-year-old man was also found dead inside the apartment, shot once to the head.

A 43-year-old off-duty police officer with the Yonkers (NY) Police Department, was transported to a nearby hospital in serious condition with a gunshot wound to the shoulder and two wounds to the back which may be the result of a stabbing, according to The Post.

Authorities say the wounded officer is the dead woman’s boyfriend and the dead man is her ex-boyfriend. It is initially believed the ex shot them both before taking his own life.