Gunfire erupted during a dispute between two groups at the party in Cypress Hills.
At least two of the victims are teenagers. A 15-year-old was shot in the left leg and a 16-year-old was struck in the right thigh.
A third male was shot in the right arm. Police have not disclosed his age.
Several people were taken into custody. No one has been charged
ALSO READ | Family searching for answers after 21-month-old dies at NJ day care
* More Brooklyn news
* Send us a news tip
* Download the abc7NY app for breaking news alerts
* Follow us on YouTube