Chopper 6 was over the scene on the 1900 block of West Point Drive, where police were called just before 9:30 a.m. for a welfare check.
Officers said 49-year-old Phillip Looby answered the door with blood on his hands and told them "you're not going to like what you find."
Looby claims he did it in self-defense when his mother threatened him with an X-acto knife.
The county coroner ruled his mother's death a homicide.
Looby now faces homicide charges.
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