Responding officers found two men dead inside a double-parked gray Jeep Grand Cherokee.
A third man was discovered on the street by the rear passenger door.
All three had been shot multiple times.
A fourth man was injured when the unknown gunman sprayed the vehicle outside a home.
Police found at least 63 rounds on the ground at the scene of the crime and say the gun may have been an AK-47 assault rifle.
Police were investigating whether the gunman followed the victims after a dispute at the Albany Manor nightclub in Brooklyn.
As the medical examiner arrived to complete the grim task of removing the bodies, emotional relatives gathered at the scene, several travelling from Roosevelt, Long Island where the 33-year old driver of the car lived.
The victims' names were not released.
WAKE UP WITH EYEWITNESS NEWS! Click here to download the WABC Eyewitness News Alarm Clock app from iTunes. or search WABC or 7online in the app store.
Get Eyewitness News Delivered