OROVILLE – A Gridley man has been sentenced to 10 years in state prison for his role in a deadly crash last May on Highway 99 near Biggs.

Frank Mattos, 71, previously pleaded no contest in Butte County Superior Court to a felony count of gross vehicular manslaughter while intoxicated in the crash that killed 56-year-old John Russom of Oroville.

Judge Michael Deems sentenced Mattos on Thursday.

Prosecutors accused Mattos of driving under the influence of alcohol in the two-vehicle wreck that happened about 7 p.m. May 19.

Mattos was northbound on the highway in a Chevrolet Silverado and had slowed to make a left turn toward a driveway near Dakota Avenue, prosecutors have said.

Witness accounts indicated that Mattos turned in front of Russom’s southbound car, which had the right of way, prosecutors have said. The vehicles collided head-on.

Russom died at the scene.

Mattos pleaded no contest Oct. 12 to the manslaughter charge, according to court documents. Mattos and prosecutors agreed that as part of the plea he would be sentenced to the upper term of 10 years in prison.

Prosecutors also agreed they would not file second-degree murder charges in the case.

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