The bear is thought to have come across the body of 65-year-old Marion Lee Williams near his trailer in California's densely-forested and mountainous Humboldt County, the Los Angeles Times said yesterday.
"It looks like he collapsed and died," CBS quoted county deputy coroner Roy Horton as saying. "The bear comes along and sees a potential food source."
The animal dragged his body into a cave to feast on, the newspaper said.
Williams, who lived alone and "off the grid," was last seen on October 8 and authorities discovered his remains on Monday, CBS reported.
Also Read
He is believed to have died at some point in the past week, the LA Times said.
"The bear does not pose a public threat," the paper quoted Andrew Hughan, spokesman for the California Department of Fish and Wildlife, as saying.
"It was just doing what bears do."
Officials tried to trap and kill the bear but called off their attempt because it appeared doubtful the bear was still in the area of the man's home in Redway, CBS said.
Last month a black bear killed a 22-year-old hiker walking with friends in the woods just an hour's drive from New York.