A 13-year-old boy was shot in the head outside a Queens Dunkin’ Donuts Monday morning, leaving him clinging to life, cops said.

The boy was struck when a gunman opened fire around 8:20 a.m. in front of the shop at the corner of Linden and Springfield boulevards in Cambria Heights, police said.

Cops could not immediately confirm whether the teen was headed to school at the time that he was shot, but the scene is just blocks from P.S./M.S. 147 Ronald McNair, Benjamin Franklin High School, P.S. 176 Cambria Heights and others.

The youthful-looking suspect — last seen wearing a white hoodie, white sneakers and carrying a black backpack — ran off after the shooting, sources said.

Officials arrive at the scene of the shooting. Kyle Mazza/Shutterstock

The victim was taken to Cohen Children’s Medical Center, where he remained in critical condition by the afternoon.

A passerby said she spotted the ailing teen, and jumped in to help, calling 911. 

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“When I came out of my car, I was about to walk in the store, I heard another little boy saying, ‘He dead! He dead!’” recalled the woman, who did not want to be identified. “So I try to get him to breathe — I call 911, talking to him, telling him to ‘Breathe, breathe, breathe.’ He just start crying, and I don’t know.”

The 911 caller said she pressed the dispatcher to send an ambulance quickly. 

Police tape blocks off the scene of the crime. Kyle Mazza/Shutterstock

“And then as soon as I heard the sirens, that’s when he just tilt over and you see all the mucus coming out of his nose and his mouth,” she said, adding of the first responders, “They just swooped him up and they put him in the ambulance.”

The woman, who has a 5-year-old daughter, was shaken by the violence that hit so close to home.  

“That could’ve been anybody’s kid,” she said through tears.The motive for the shooting remained under investigation.

The boy is fighting for his life after being shot in the head. Kyle Mazza/Shutterstock

A 47-year-old woman who works at the Speedway gas station across the street said she never heard the gunshot, but witnessed the heartbreaking aftermath. “I saw the kid before the ambulance came,” she said. “A baby boy. Lying on the ground.”

Kids often stop into the Dunkin Donuts before heading to one of the nearby schools, the gas station worker said.

“I feel scared. Yes, as a mother,” she said. “I just dropped my 9-year-old off this morning before I came to work. This is very sad and very scary.”