A 6th District Juvenile Court judge has convicted a 16-year-old LaVerkin, Washington County, teenager of negligent homicide in the death Aug. 10, 1987, of Washington County Sheriff Glenwood Humphries' 15-year-old son.

A reckless driving charge against the youth was taken under advisement by Judge Joseph E. Jackson following a one-day non-jury trial in the death of Tony Humphries.A predisposition report will be prepared by the juvenile court probation department, which will recommend sentencing on the second-degree felony, a court spokesman said Wednesday.

Humphries died in Las Vegas at the University of Nevada Medical Center the day after being involved in a two-vehicle traffic accident in St. George.

Humphries initially was taken to Dixie Medical Center, then flown to Las Vegas after the southbound car he was riding in collided with a motorcycle, went out of control, struck a concrete ditch and overturned.

The motorcyclist, David Crismon, 18, of Orem, was hospitalized with non-life-threatening injuries. The defendant was treated for a fractured arm and abrasions and released.