A fire early Thursday morning that killed Gary Horner, 58, was the result of careless smoking, fire investigators said this morning.
Horner died of carbon monoxide poisoning, according to Lt. Jay Steinbrenner, of the Batavia Fire Department.
The fire was reported about 3 a.m. Friday at 5 Dellinger Ave. when a passerby heard a smoke detector and smelled smoke.
Horner lived in a second floor apartment. The four occupants of the lower apartment were safely evacuated.