A 12-year-old boy has confessed to accidentally shooting his mother, a Nigerian woman, after initially claiming an intruder killed her in their US home. Ayobiyi Cook, a 29-year-old registered nurse who friends called ‘Yo-Yo’, was found dead in the family’s Forestdale, Alabama home, on the 2400 block of Freemont Avenue after midnight on August 6.

Her son had originally told police that an intruder had entered their house, shot his mother and then ran away.

“The child originally fabricated a story that detectives determined was not possible,” Deputy Chief David Agee said. “After investigation, Sheriff’s Detectives were able to determine that the victim’s 12-year-old son unintentionally discharged a firearm striking his mother causing her death.

The boy’s father is an officer with the Birmingham Police Department and was working at the time of the shooting, according to Birmingham Real-Time News.

The funeral for the slain mom will be held on August 12 at the Faith Memorial Chapel in Bessmer, Alabama.