A Long Island businessman was gunned down outside his home by a killer — still on the loose — who ambushed him in the dark.

Hasan Kaya, 49, was shot six times at his North Bellmore home at 11:30 p.m. Sunday, sources said.

“I heard four quick shots, then it was quiet, nothing else,” said neighbor Joe Ott.

Nassau Homicide Squad commander Detective Lt. John Azzata said, “At this time, we do not have a motive.”