Prosecutors have filed charges against a Washington State Patrol trooper for allegedly killing a 20-year-old Richland man in a wreck more than six months ago.

Prosecutors charged Sarah L. Clasen, 35, with one count of vehicular homicide while under the influence for the death of Jhoser Vega Sanchez on Highway 240 about 7:30 p.m. March 1.

Spokane County’s Assistant Criminal Chief Attorney Katie McNulty filed the case Thursday.

Clasen will not be held in the jail before entering a plea at a Sept. 24 arraignment.

Benton County Prosecutor Eric Eisinger asked the Spokane County Prosecutor’s Office to handle the case, because he felt the relationship between his office and the police agency created a potential issue.

Former Spokane County Prosecutor Larry Haskell and current Prosecutor Pres

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