SAN FRANCISCO (BCN) – A 16-year-old boy was fatally stabbed in San Francisco’s Ingleside neighborhood on Monday night, a police spokesman said.

The stabbing was reported at 10:55 p.m. Monday near the intersection of Capitol and De Montfort avenues, just off of Ocean Avenue, police Officer Albie Esparza said.

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The teen was walking with his friend when a male suspect approached and punched him multiple times, Esparza said.

The suspect, believed to be about 18 years old, then tried to flee but the victim and his friend chased him. At some point during the pursuit, the suspect turned around and stabbed the victim in the torso with a knife, according to Esparza.

The boy was taken to San Francisco General Hospital where he was pronounced dead, Esparza said.

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The stabber fled on foot and has not been located, Esparza said.

“We’re trying to ascertain if it was a stranger or if they knew each other,” he said. “We don’t know.”

Police are asking any witnesses to the stabbing to come forward.  Anyone with information on the case is asked to call the Police Department’s anonymous tip line at (415) 575-4444 or text TIP411.

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