A Brooklyn man died three months after he was found unconscious on the street a block from his home and investigators have deemed the case a homicide, officials said Friday.

Nelson Carrion, 62, was unconscious with a head wound on Prospect Place near Classon Ave. near his home in Prospect Heights about 5:30 p.m. May 28, cops said.

He was taken to Kings County Hospital, where he clung to life for three months before dying on Sept. 10.

Investigators initially believed Carrion, who was drunk when he was found unconscious, hurt his head during an accidental fall, sources said.

But the city Medical Examiner determined he was beaten and ruled his death a homicide, officials said Friday.

No arrests have been made.

Anyone with information is asked to call Crime Stoppers at (800) 577-TIPS. All calls will be kept confidential.