Washington County deputy charged with manslaughter after fatal motorcycle crash

Jul 11, 2025, 9:18 AM

A motorcyclist was killed after a crash involving a sheriff's deputy in Washington County, the sheriff's office said, on Nov. 17, 2024. (Courtesy Sadie Hindes)

(Courtesy Sadie Hindes)

BY MARY CULBERTSON

KSLNewsRadio

SALT LAKE CITY — A Washington County Sheriff’s deputy was formally charged in 5th District Court Wednesday after a crash in November 2024 that killed a motorcyclist.

According to court documents, the deputy, Silafia Clyde Brown, 49, faces a second-degree felony charge of manslaughter, after “recklessly” causing the death of 33-year-old Daniel Jack Monfore of St. George.

On Nov. 17, 2025, the crash occurred near mile marker 11 on Old Highway 91 near a sharper turn on the road.

Two months later, KSL TV reported findings from court documents showing Brown had “crossed over the center divider line in a blind corner.” The move caused Brown to hit Monfore head-on.

At that point in the investigation, a search warrant sought to obtain engine control records from the Yamaha MT07 that Monfore was riding.

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Washington County deputy charged with manslaughter after fatal motorcycle crash

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