A toxicology report from the Glenn County Coroner’s Office released Tuesday showed that Cal Poly student Brett Olson had alcohol and cocaine in his system when he drowned in the Sacramento River in early September.
The autopsy report concluded Olson died of asphyxiation due to drowning and that acute alcohol intoxication and recent cocaine use were contributing factors in his death.
Olson, 20, a theater major, was participating in a Labor Day float down the river when he disappeared Sept. 2. He was last seen on Beer Can Beach near Hamilton City, west of Chico. Fishermen found his body Sept. 9 a mile or two down river after an extensive search.
“All of the findings are indicative of an accidental death and which this death will be classified as,” said Glenn County Sheriff Larry Jones. “The investigation into this extremely unfortunate case is closed.”