NEW YORK (CBSNewYork) – Three people are dead after a shooting in Fort Greene early Saturday morning.

The three men were gunned down in the courtyard of the Ingersoll Houses at Myrtle Avenue and Fleet Walk at around 1:48 a.m., police said.

The victims were identified as Calvin Clinkscales, 43, of Queens, Lacount Simmons, 39, of Brooklyn, and Herbert Brown, 76, of Brooklyn.

Clinkscales and Simmons were shot in the head, CBS2’s Ilana Gold reported. They were pronounced dead at the scene.

Brown was struck in the abdomen and died at Methodist Hospital.

On Sunday, authorities released surveillance footage of the suspect.

As CBS2’s Valerie Castro reported, he appeared to linger near some recycling containers on the sidewalk at the Ingersoll Houses, before running away after the shooting.

Investigators were on scene shortly after, using flashlights to look for evidence.

Residents awoke to the news of bloodshed in front of their homes.

“I heard shooting,” Victor Lopez told 1010 WINS’ Roger Stern. “About 15 shots.”

“We have to stop this. We have to stop the killing. We have to stop the hatred,” Loretta Swindle told Stern. She said she’s seen six people killed in the same spot in the 30 years she’s lived there, Stern reported.

Community activist Tony Herbert said there is speculation in the neighborhood about who the gunman is and he hopes that person comes forward.

“And I’m gonna say this to the shooter directly or what have you. If you are who I think you are, out of respect to your family, turn yourself in. I will walk you into the police department personally, but we gotta get you off that street,” Herbert said.

Police said it’s unclear what relationship the gunman had to the victims, or if all of the victims were his intended targets.

Three other people were killed in incidents in Manhattan, the Bronx and elsewhere in Brooklyn, the NYPD said.