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A former high school chemistry teacher in Davis County is accused of sexually abusing a 16-year-old girl.

Douglas B. Tate, 69, of Kaysville, was a part-time chemistry teacher at Viewmont High School when he had sexual contact with the teen between July and October, investigators wrote in charges filed last week in 2nd District Court.

The teen was not a Viewmont student and knew Tate through "a secondary acquaintance," said Farmington police Chief Wayne Hansen.

Tate was placed on paid leave on Nov. 22, said Davis School District spokesman Chris Williams.

On the same day, Tate sent text messages to the teen, asking whether she had told anyone of the sexual contact and instructing her to "get rid of everything" on her phone, charging documents state.

Tate, who had been teaching at the high school since 2008, resigned from the school district Nov. 30, Williams said.

Tate is charged with three counts each of forcible sodomy and object rape, all first-degree felonies; two second-degree-felony counts of forcible sexual abuse; and witness tampering, a third-degree felony.

An initial court appearance is set for Dec. 16.

He is being held at the Davis County jail in lieu of $50,000.

Twitter: @erinalberty