— A Hampden man already on the state sex offender registry for sex crimes involving a child has been indicted on federal charges of possession child pornography.

Walter Mosher pleaded not guilty to the charge Friday in U.S. District Court in Bangor. A detention hearing is scheduled for today.

The Bangor Daily News reports that prosecutors allege the 64-year-old Mosher’s computer contained images of child pornography, specifically images and videos of minors engaged in sexually explicit conduct.

Mosher is listed on the Maine Sex Offender Registry for a 1986 case that resulted in convictions in Aroostook County Superior Court on charges of gross sexual misconduct, unlawful sexual contact and sexual exploitation of a minor under the age of 14.

He faces up to 20 years in prison if convicted.

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