Mohammed Hamwi, 48, was shot in the head and torso just after midnight at the corner of 173rd Street and 105th Avenue in Jamaica Station.
He was just a half a block from the home he shared with his husband and mother-in-law.
One neighbor described him as an intelligent, quiet man who worked as a systems analyst.
Detectives, meanwhile, were combing the neighborhood looking for clues in the case.
Of particular interest: security camera video from nearby homes. For example, video obtained by Eyewitness News, shows emergency vehicles shortly after the shooting, but not the crime itself or the suspect.
Some here theorize a nearby park with a seedy reputation after dark may have played a role in the shooting. One neighbor, who did not want to be identified, says this has convinced her it may be time to go.
"I might be moving. Now that it happened so close, I'm beginning to, you know, re-think about staying," she said.
Hamwi was found with his credit cards and wallet, containing $200, so it's not clear if the shooting was the result of a robbery attempt gone bad.