The New York Police Department is looking for the gunman who killed four victims in Brooklyn including a teenage on the forehead.

Gunfire broke out in Brownsville at around eight p.m. Sunday night, the NYPD reported. The suspect was involved in a dispute and took out a gun before firing the police reported.

A 16-year-old was shot in his head. A 24-year-old victim was shot in the stomach, and an 59-year-old was injured with a leg. All were treated in hospitals.

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The suspect gunman who killed four victims at the scene in New York City over the weekend was captured on security footage police say. (NYPD )

The fourth person, aged 34, was stricken with a injury on his back, but he did not seek treatment.

The victims of the older two weren’t the target police claimed. The video released by the NYPD this week shows the suspect running before returning and shooting an assault weapon.

One of the victims was injured and fell to the floor. The gunman was seen fleeing riding a motorbike or scooter.