A Canadian man who went missing near Pryor Creek in October likely drowned, according to preliminary information from an autopsy.

The medical examiner’s office will wait for toxicology results before issuing a final determination on the cause of death of Cameron Collin, 37, according to a press release from Yellowstone County Sheriff Mike Linder on Monday.

However, the autopsy showed there were no obvious signs of foul play in Collin’s death.

“Information at this time indicates Mr. Collin’s death was the result of drowning,” Linder wrote.

Collin's body was recovered Saturday  from Pryor Creek, a few hundred yards from where he was last seen, Linder said Saturday.

The lab could take several weeks to return the results of toxicology testing, Linder added.

Collin, of Airdrie, Alberta, had been in the Billings area for a friend’s wedding. He disappeared sometime on the night of Oct. 4, and failed to show up for the wedding, according to Collin’s sister, Julia.

Collin had been with others at a property on the 5100 block of Pryor Road for a bachelor party, Julia Collin said. Others left the property to go into town, but Collin didn't join them, his sister said. He was believed to be intoxicated, she said.

Collin’s family had announced a $10,000 reward for information leading to the man’s discovery. They also made two trips to Billings to help search for Collin.

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