A Florida man told police he shot his mother with a gun and a bow-and-arrow and then stabbed her Sunday because he claimed she "stole his diamonds and also gave his father cancer," authorities said.

The Okaloosa County Sheriff's Office received a call at 2:48 a.m. Sunday reporting a man knocking over Christmas decorations and yelling at another person. When deputies arrived, they found 65-year-old Gloria Watkins slumped forward in a chair with arrows protruding from her head.

Her son, Michael Watkins, 42, admitted to the killing, according to an arrest report.

"You see that, that's death," Watkins said as he pointed to his mother, according to the report.

Watkins claimed his mother "stole his diamonds and also gave his father cancer" and that "he had to kill her because she was trying to kill him," the report said. The report did not say why or how she was trying to kill him.

Watkins was charged with murder and resisting arrest without violence. The sheriff's office said Watkins ignored repeated commands to get on the ground. After eventually complying, he stood up and retrieved a large knife from a sheath on his belt, authorities said.

Deputies used stun guns on Watkins twice.

An autopsy was to be conducted on the victim. It's not clear if Watkins has an attorney. Officials with the jail and the sheriff's office could not be reached.