The shooting was reported from McLaughlin Park at the intersection of Tillary and Jay streets around 13:45, reports ABC7.
The teenager attended Brooklyn Lab High School, which is a couple of blocks from the park. On Wednesday, students studied until lunch. Police say the victim got into an argument in the park, which led to the shooting.
Witnesses said that the young man was sitting on a bench with two girls of school age. Then two guys in black came up to them. After a few sentences, a fistfight ensued.
Police say the teenager was shot by one of the suspects. The wounded man was taken to New York Presbyterian Methodist Hospital in Brooklyn, where he was pronounced dead.
“I saw a child lying on the floor. And someone from the school gave him chest compressions, a member of the teaching staff,” said witness Jasmine Bulger.
Mobile phone footage shows dozens of people running out of the house after the teenager was shot.
Authorities said they were looking for two suspects. According to the description, these are schoolchildren who were wearing ski masks. They both fled east down Tillary Street towards Adams Street on foot.
No arrests have been made and the investigation is ongoing.
Police say there were about 30 other people in the park at the time. Law enforcement is asking anyone with information to call 1-800-577-TIPS.