A 17-year-old boy accused of killing his father in Oklahoma last year is now accused of killing his mother in Florida. The boy claimed he killed Charles Griffith in self-defense during a fight at their home southwest of Stroud on Valentine's Day 2023. The boy is now accused of killing 39-year-old Catherine Griffith of Port Charlotte, Florida, during a fight on Sunday. The boy told authorities his mother lunged at him with a knife and fell on the weapon. She was stabbed in her neck and died at the scene. A neighbor told authorities she had seen the boy pull his mother by her hair into his grandmother's home. He had moved to Florida to live with his mother in February of this year.