Authorities in Montana are searching for a killer who is "capable of truly heinous things" as they investigate the death of a man whose friend told police first he may have been the victim of a bear attack.

"The caller indicated that the death may have been caused by a bear attack," the news release said. Start the day smarter. Get all the news you need in your inbox each morning. Multiple agencies,

CBS News reports that Kjersem sustained "multiple chop wounds," including to his skull, according to an autopsy.