A jealous ex shot dead his former girlfriend and wounded her new boyfriend before killing himself on Sunday in New York City's third murder-suicide in days.

Gunman Darnell Solomon, 30, shot 24-year-old Jened Duncan in the head and her new partner, 33, in the chest. He then turned the gun on himself, police say.

Both Solomon and Duncan died at hospital. Duncan's current partner, identified as Miguel McLawrence by Newsweek, is in a critical condition. He is expected to survive, officials say.

The former couple are said to have lived at the Brooklyn apartment where the shooting took place. It is not know when they split but it is understood Duncan was still living in the home.

Police outside the scene in Utica Ave in Brooklyn after a jealous ex shot dead his former girlfriend and wounded her new boyfriend before killing himself on Sunday

Gunman Darnell Solomon shot Jened Duncan in the head and her new partner in the chest. He then turned the gun on himself, police say. The bloodied scene outside the apartment

A grieving loved one pictured outside the home where the former couple are said to have lived

Video courtesy PIX11

Duncan's uncle told The New York Post his wife was 'panicking' when she could not reach her niece, adding: 'She kept saying that she couldn't get in touch with her, that she wasn't picking up her phone calls.

'She was a good kid, a very good kid, never got in trouble. We're just trying to figure out why would somebody do this. It's just too painful.'

An unnamed aunt of Duncan said: 'I just gotta think positive because I have kids to live for, her sister lives with me. I'm just going to hold it together. I can't bring her back. She's already gone.'

Police have not said if they had been called regarding domestic disputes between the former couple prior to Sunday's shooting.

Police say Yonathan Tedla (right), 46, beheaded his wife, Jennifer Schlecht (left), 42, and slit the throat of their five-year-old daughter, Abaynesh (center), before hanging himself

Dojoy (right) was said to have had an order of protection against Budhidat (left), stemming for an August incident in which he allegedly slapped and strangled her

The deaths mark the third murder-suicide involving couples in New York City in just days.

Dineshwar Budhidat, 33, is believed to have stabbed his bartender wife, Donne Dojoy, 27, to death Friday night in their Queens home, before going to a field in Howard Beach, New York, and hanging himself from a tree.

The couple had married in July. He was jealous of the crush she had on a Bollywood actor, friends say.

Two days earlier a man decapitated his wife, slit the throat of their five-year-old daughter and then took his own life by hanging, just hours after the woman tried to get an order of protection.

Officers found Yonathan Tedla, 46, Jennifer Schlecht, 42, and their five-year-old daughter, Abaynesh Schlecht Tedla, dead inside their Harlem home Wednesday.

Schlecht's heartbroken father, Kenneth Schlecht, 74, said his daughter's marriage was unraveling, and that his son-in-law had threatened to 'take them all out' if Jennifer tried to serve him with divorce papers.