Oklahoma police say a woman who was accidentally shot in the head by her 3-year-old boy, has died.

Tulsa police officials said 26-year-old Christa Engels was home with her 1-year-old and 3-year-old Monday night when the accident happened.

Officials believe she was changing her younger child’s diaper when the 3-year-old toddler fired the shot with a semi-automatic handgun.

"The grandmother came in and supposedly found the two children covered in blood," neighbor Vera Bennett told KOKI-TV.

Specialists who talked with the child confirmed the 3-year-old pulled the trigger.

"I just can’t imagine in today's society that there would be a gun a loaded gun where a toddler could get it," Bennett said.

Tulsa police said the woman's husband is a truck driver and was out of the state when the accident happened.

Officers have not released the identity of the woman killed.