The power of social media helped a recent missing person's case catch the attention of tens of thousands of people.
Cal Poly student Brett Olson went missing on Labor Day weekend during a tube down the Sacramento River.
During the week he was missing, 100,000 joined a Let's Bring Brett Home Facebook page, and sent countless tweets out, in the hopes of finding the young man.
His body was found a week later along the edge of the river.
The Glenn County Sheriff’s Office released the autopsy report Tuesday. The coroner said Olson died of asphyxiation due to drowning.
The coroner also found what he called "acute ethanol (alcohol) intoxication" and said Olson had recently used cocaine.
The report concluded: As all the findings are indicative of an accidental death and which this death will be classified as; the investigation into this extremely unfortunate case is closed.