A missing Gresham woman found dead off a hiking trail near Mount Hood on Monday was likely killed by a cougar days before her discovery, authorities announced Tuesday. It's the state's first confirmed fatal wild cougar attack.

An autopsy determined the wounds found on the body of 55-year-old Diana Bober were caused by a large animal, but DNA samples are being sent to the Oregon Fish & Wildlife Forensics Lab in Ashland to find more evidence of what harmed Bober, according to agency spokesman Brian Wolfer.

"There's a slim possibly that something else is responsible, but at this point every indication is that a cougar is responsible," he said.

It's not immediately clear when the testing will be completed, Wolfer said, and wildlife officials are on the lookout for the animal that may have been responsible. It's also not yet clear when Bober was attacked, but it likely occurred a couple of days before she was found, according to Wolfer.