Officers responded to shots fired along Euclid Avenue and Sutter Avenue in Cypress Hills around 2:40 p.m.
When officers arrived, they found two 20-year-old victims, one with a gunshot wound to the chest and another with a gunshot wound to his leg and a graze wound to his head.
Both men, who are twins, were taken to Brookdale Hospital Medical Center, where the man shot in the chest was pronounced dead.
He was identified as 20-year-old Brooklyn resident Darius Coles.
The second victim is in stable condition.
Police say a male suspect is believed to have fled on a bicycle.
----------
* More Brooklyn news
* Send us a news tip
* Download the abc7NY app for breaking news alerts
* Follow us on YouTube