The young mom who was shot and killed while pushing her 3-month-old baby in a stroller on the Upper East Side was a domestic violence victim — and cops are looking to speak with the child’s father in connection with the slaying, family and law enforcement sources said Thursday. 

The victim, identified by her mother as 20-year-old Azsia Johnson, texted relatives that she had been planning on meeting her infant’s dad on Wednesday night, according to the sources.

“She was targeted. It was a close head shot and there were powder burns,” a high-ranking police source said.

Johnson had been assaulted by her ex-boyfriend in Jamaica, Queens, about six months ago while six months pregnant with his child, her heartbroken mom, Lisa Desort, told The Post. 

Following the altercation, Desort said, the ex-boyfriend continued “stalking” and harassing her daughter. They called police for help, but he was not arrested, she claimed. 

“We called the precinct numerous times to tell the [domestic violence] unit that he was stalking and harrowing her. Even [though] they knew what apartment he lived in, they failed to apprehend and arrest him,” the mom continued. 

“The city failed to protect my daughter.” 

The NYPD didn’t immediately return a request for comment. Law enforcement sources confirmed Johnson had previously been the victim of a domestic violence incident, and that her shooting death was “domestic” in nature. 

Investigators are looking to speak with the ex in connection with the murder and he is considered a person of interest in the slaying, the sources said.

Around 8:25 p.m. Wednesday, Johnson was walking with her infant in a carriage near the corner of Lexington Avenue and East 95th Street when an assailant dressed in a black hoodie and sweatpants shot her once in the head and fled. 

She was brought to Metropolitan Hospital, where she was pronounced dead. The child was unharmed.

Desort, who was too distraught to speak by phone, called her daughter “an exceptional young lady” with big dreams in a text message.

“She worked hard and had dreams of becoming a pediatric nurse in the near future,” Desort wrote.

Johnson lived with her mother and sisters in an apartment in the Bronx but had been in and out of the shelter system over the last year, according to law enforcement sources and a neighbor at the building. 

“Last night someone came and told her mother … and she just started screaming, ‘My baby’s dead, my baby’s dead!’ … then they all left,” said the neighbor, who didn’t want to share their name. 

“Azsia just had that baby three months ago. She’s a beautiful little girl.”

On Thursday morning, police were seen towing a Lexus SUV with an apparent bullet hole above the front right wheel arch that had been parked overnight near the scene of the shooting. 

The vehicle’s owner, Julio Cruz, 62, hopes it’ll help cops track down the killer. 

“The officer said the hole in my car is the size of a bullet and the bullet is probably still inside the car,” Cruz told The Post, adding he didn’t see the hole on Wednesday afternoon. 

“They will inspect the car and try to find the bullet … I hope they find something that will help this case.”