CORSICANA, Texas (AP) Investigators are calling the deadly shooting of 3-year-old Central Texas boy an accident, perhaps involving an 8-year-old child.

Navarro County Sheriff Elmer Tanner tells the Corsicana Daily Sun ( the shooting happened just before noon Monday outside a house in the town of Eureka, about 12 miles southeast of Corsicana and 65 miles south of Dallas.

Tanner says the toddler was shot in the head at close range with a 20-gauge shotgun in a shed next to the house. Tanner says the shooter appears to have been an 8-year-old child, but it's still uncertain who discharged the firearm.

Tanner also said deputies believe the shooting to have been accidental, but the investigation is still open.