VANCOUVER -- A Clackamas County Sheriff's Office sergeant who served as president of the police union pleaded guilty on Wednesday to harassing and assaulting his stepson.

Sentencing for Sgt. Steve Hyson was set for April 2. At the time of his arrest, he was president of the Clackamas County Peace Officers Association, with a term set to end this year.

Hyson was arrested in May 2012 for assaulting his 22-year-old stepson and was placed on administrative leave by the sheriff's office.

Hyson faced new charges this past week on suspicion of witness tampering, but a Clark County Court clerk said those charges will be included in the original case.

The Oregonian reported earlier that Hyson has weathered past domestic-violence allegations.

In 2008, he was charged with fourth-degree domestic violence assault, accused of striking his wife at their home north of Vancouver. The charge was dropped after an investigation.

In 2011, Clark County deputies investigated a domestic violence complaint against Hyson, but he was not charged.

BACKGROUND:Sgt. Steve Hyson 2012 arrest

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