Their injuries are not life threatening.
The ages of the deceased and those shot range in age between 32 and 49 years old. Shea said there was "evidence of gambling" including cards and dice inside.
Four people have been killed and multiple are injured after a shooting inside an illegal gambling location in NY on Saturday. The three who were injured were taken to Kings County Hospital and Brookdale University Hospital Medical Center.
The shooting took place outside of an after-hours club called Triple A Aces, which serves as a "private and social rental space", the New York Post reported.
The shooting happened just before 7 a.m. Saturday. He said two guns were found at the scene and more could potentially be found. Police are unsure of what prompted the shooting.
This is a developing story.
Police said that there have been no complaints in the last few years at this site in the Crown Heights neighborhood. Police say the information is preliminary.
Officers based three blocks away at the NYPD 77th Precinct raced to the scene after having responded to a shooting elsewhere. but it was initially unclear what sparked the shooting.
No one has been arrested over the shooting, which took place in Brooklyn, and the motive and exact circumstances are not known, a NY police official told AFP.