Police are still trying to identify a suspect in the shooting, which happened around 2 am and resulted in two women and three men being shot, New York City Police told CNN.
Officials did not provide details on what may have led to the gunfire — but said a large group of people were gathered on the boardwalk in Brooklyn when somebody started shooting.
A 31-year-old man is in critical condition in the hospital after being shot in the back, police said.
The four other victims are in stable condition and include: a 27-year-old woman who was shot in the leg; a 26-year-old woman who was also shot in the leg; a 36-year-old man who was shot and suffered an injury to his chin; and a 19-year-old-man who was shot in the leg.
Police have not provided a description of the shooter and the weapon used has not been recovered.
The shooting was among a number of violent incidents in the city over the weekend.
Hours later, the NYPD responded to another call in Queens that resulted in officers fatally shooting a man who brandished a weapon. The man had made calls to police threatening to “blow the head off of the first police officers that he saw,” said police Chief Jeffrey B. Maddrey.
When police arrived in the area the suspect was located and, after a short verbal exchange, the man brandished a firearm and pointed it at police, Maddrey said.
Six officers and the suspect exchanged gunfire before the suspect was subdued, arrested and taken to the hospital where he died.
Just over an hour later, another officer-involved shooting happened in Brooklyn, when police stopped an unmarked vehicle and a passenger jumped out and fled on foot.
After a chase, the suspect turned and fired multiple gunshots at an officer, according to Maddrey. The officer returned gunfire and hit the suspect in the chest. The suspect was transported to a hospital and later died.