Casper police say a woman was drunk when she caused a crash that led to the death of a motorcyclist.

Sixty-eight-year-old Yvonne Patrice Kessel is charged with aggravated vehicular homicide in Natrona County District Court. If convicted, she could face up to 20 years behind bars.

She has not yet had an opportunity to enter pleas to the charges.

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According to an affidavit of probable cause, Casper police were notified of a crash between a motorcycle and a minivan at roughly 4 p.m. on November 7 at the intersection of 3rd and Country Club.

Kessel was driving the minivan. The motorcyclist was identified as Cruz Paulsen.

The affidavit states police learned that Kessel was turning onto 3rd street and did not stop for Paulsen. Paulsen collided with Kessel's minivan.

Paulsen suffered extensive head injuries and was pronounced dead at Wyoming Medical Center.

Court documents state Kessel told investigators that she drank a mixture of Mountain Dew and vodka throughout the day, but wasn't intoxicated.

The affidavit states Kessel failed field sobriety tests. She consented to a blood draw roughly 90 minutes after the incident which resulted in a BAC of .211 g/100ml.