A 2-year-old boy apparently shot and killed his father in what police in Alabama are calling a horrible accident.

Hoover police Capt. Gregg Rector says investigators have all but ruled out suicide and other scenarios in the shooting.

Rector says an autopsy is being conducted Wednesday on the 31-year-old man. He was found shot once in the head in an apartment on Tuesday afternoon, and no one else was inside other than the toddler.

Rector says there's no sign of an intruder or a self-inflicted wound, and police know there was a semiautomatic pistol in the apartment.

Rector says it's not difficult for a 2-year-old boy to pull a trigger on that kind of weapon, and investigators believe that's what happened.

The victim's name hasn't been released.