A Fairburn man died early Friday when the all-terrain vehicle he was driving struck a deer in south Fulton County, authorities said.

The incident happened around 3 a.m. Friday on Johnson Road near Phipps Road in Palmetto.

The man, identified by the Fulton County Medical Examiner's office as 44-year-old Johnny Chapman, was ejected from the ATV and killed, according to the Georgia State Patrol.

Investigators have not said whether Chapman was wearing a helmet, or why he was riding an ATV at 3 a.m.