OURAY, Colo. -- Wildlife officials are investigating whether bears that fed on the body of a 74-year-old Ouray County woman outside her home killed her or found her body after she died.

A caretaker saw the bear feeding on Donna Munson's body as she lay outside of her home, just north of Ouray. The caretaker called 911, and dispatchers reported the incident to the DOW.

A necropsy on a bear that aggressively approached sheriff's deputies investigating Munson's death didn't prove whether the bear killed Munson. A necropsy on a second bear at the home was pending.

While it's unclear if she was killed by the bear or died of other causes, there were wounds from an animal found on her body, DOW spokesman Joe Lewandowski said.

Lewandowski said Munson was known to feed bears dog food for years and would not stop, even after repeated requests from the DOW.

Division spokesman Tyler Baskfield said Saturday that Munson was never ticketed because hilly terrain and foliage around her home made it difficult to find evidence of her putting out food.

"It got to the point where she never opened her door for us, allowed us on her property or answered her phone," Baskfield said. "Our officers went above and beyond, in terms of gaining her cooperation."

Wildlife officials said Munson had built a metal fence covering her porch, allegedly so she could feed bears through the fence. In early July, a man who described himself as a caretaker asked officers to place bear traps on the property out of concern for his safety, the division said.

While sheriff's deputies were at Munson's home investigating the report of the mauling, an aggressive bear approached them so they killed it. The 250-pound male bear will be taken to the Colorado State Veterinary Office, where a necropsy will be performed and its stomach contents will be examined and analyzed.

"There have been a lot of bears that have been habituated to dog food. Once this happens you cannot relocate them," Lewandowski said. "Once bears are accustomed to the food, there is no getting them off it. The bears will keep coming back."

There have been only two fatal bear attacks in Colorado in the past 100 years. The first was in Grand County in 1971, when a man was killed. The second incident was Aug. 10, 1993, in Fremont County when a 24-year-old man was killed.