SANTA ROSA (CBS SF) – A Santa Rosa man was sentenced to 25 years in prison Tuesday for molesting and sexually assaulting his underage stepdaughter for 18 months.

Alan Scott Randel, 55, was convicted in January of three counts of forcible rape , child abuse and intimidating the girl between Jan. 1, 2008 and June 13, 2009, Sonoma County District Attorney Jill Ravitch said.

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The sexual assaults began when the girl was 15 and her mother, who was married to Randel, moved out of the house, Ravitch said.

Randel was strict and controlling. He limited his stepdaughter’s time with friends and checked her cellphone calls and text messages, Ravitch said.

He also grounded the girl for extended periods of time and prohibited her from eating and taking bathroom breaks, Ravitch said.

Randel threatened to kill his stepdaughter and force her to live on the streets if she told anyone about the sexual assaults, Ravitch said.

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The girl finally disclosed to friends what was happening, Ravitch said.

Randel denied everything to Santa Rosa police but later admitted having sex with the girl but said it was consensual, Ravitch said. He also admitted he had a bad temper and assaulted his stepdaughter, Ravitch said.

Sonoma County Superior Court Judge Arthur Wick sentenced Randel to 25 years in prison and required him to register as a sex offender for life, Ravitch said.

“A violent sexual predator has been brought to justice,” Ravitch said.

“The survivor is aware of the sentence, and while relieved that the criminal proceedings have concluded, will live with the memory of this terrible ordeal for the rest of her life,” Ravitch said.

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