“Once a bear injures or consumes humans, we will not risk the chance that this could happen to someone else,” he said.
Last month a backcountry guide just west of Yellowstone National Park in Montana was killed by a large grizzly bear. But in Colorado, there had not been a fatal bear attack since 2009, officials there said.
There have been three fatal attacks recorded in Colorado in the last 50 years. In 1971, a 31-year-old camper was killed when a bear attacked his tent. In 1993, a man was killed inside his camper after trying to defend himself by shooting a bear in the rib cage. In 2009, a 74-year-old woman was killed after she had been illegally feeding bears through a fence in her yard, officials said.
State authorities estimate there are 17,000 to 20,000 black bears in Colorado, where the parks and wildlife officials try to educate people on bear safety.
“We share a lot of the same spaces,” Mr. Clay said. Around this time of year, bears become active since they are coming out of hibernation. “They’re going to be on the search for food,” he said.
In a statement on Saturday, he said, “This is a tragic event and a sad reminder that bears are wild and potentially dangerous.”
Officials said they were not sure what led to the latest attack, and an autopsy was planned for Tuesday.