Authorities say four family members were killed in a murder-suicide at a Kentucky home that was set on fire.

Jefferson County Deputy Coroner Eddie Robinson said Monday the victims were a married couple and their two children. He says all four died of gunshot wounds.

Robinson says 33-year-old Brad Hettinger died at the scene Sunday of an apparent self-inflicted gunshot wound to the head.

He says Hettinger's wife, 32-year-old Billie Jo Hettinger, died of gunshot wounds to the chest and head. He says her identification is tentative pending review of dental records.

Robinson says their children — 5-year-old Collin Hettinger and 4-year-old Courtney Hettinger — each died of a single gunshot wound to the head.

The victims were found in the home after firefighters responded to the fire in an upscale suburban neighborhood in southeast Louisville.