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PAYETTE COUNTY - An 18-year-old Payette man who shot and killed his grandmother in September of 2012 will spend at least 25 years in prison for the crime.

Tyler Naughton was sentenced to 30-years in prison on Friday, of which 25 years is a fixed term. Judge Susan Wiebe handed down the sentence in a Payette County courtroom.

Naughton shot and killed 60-year-old Sherryl M. Kenney with a .22 caliber rifle on September 2, 2012.

The 18-year-old was arrested a week later after an extensive backcountry search. He was initially charged with second-degree murder, but that charge was reduced to voluntary manslaughter and use of a firearm in the commission of a crime.

Naughton was also charged with stealing a 2006 Ford pickup truck, which belonged to his grandparents. Payette County Sheriff Chad Huff says Naughton was living with the couple at the time.

Payette County Prosecuting Attorney Anne-Marie Kelso said Naughton's grandfather -- Michael Kenney -- was not present at the sentencing due to pending charges and and arrest warrant for lewd and lascivious conduct of a minor.

Naughton's defense attorneys detailed what they described as both physical and sexual abuse of their client prior to sentencing, according to Kelso.

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