LAKE WALES, Fla. (AP) - Authorities say a central Florida teen killed his grandmother, who was found stabbed nearly 100 times, struck in the face with a wrench and shot in the head with a crossbow.
    
The Polk County Sheriff's Office reports that 19-year-old Jasper Aristotle Smiddie was arrested Wednesday morning and charged with first-degree murder.
    
Authorities say Smiddie's father contacted authorities Tuesday. The father said Smiddie had called him and confessed to killing 67-year-old Gloria Helfrich. Smiddie lived with his grandmother in a Lake Wales home, where deputies found the body.
    
Smiddie was arrested in Highlands County after he was spotted near his girlfriend's home.
    
A motive for the slaying wasn't immediately clear.

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