It happened in Freeport at Martin Luther King Jr. Park on Stevens Street on Saturday, Nov. 28 at around 4:30 p.m.
Upon police arrival, officers observed two men, 21 and 19 years of age, who were the victims of gunshot wounds.
The 21-year-old was taken to a local hospital where he succumbed to his injuries and was pronounced dead by a staff physician.
The 19-year-old was also taken to an area hospital where he is currently listed in stable condition.
Identities have not yet been released.
The investigation into the incident is ongoing.
Detectives request anyone with information call Crime Stoppers at 1-800-244-TIPS. All callers will remain anonymous.
Check back to Daily Voice for updates.
Click here to follow Daily Voice Suffolk and receive free news updates.