A grizzly bear attacked and killed a person who was camping in western Montana early Tuesday, after previously wandering into the area where the person was camping, the Powell County sheriff said.

The attack happened between 4 a.m. and 5 a.m. in Ovando, a town of fewer than 100 people about 60 miles (97 kilometers) northwest of Helena, said Greg Lemon, a spokesperson with Montana Fish Wildlife and Parks.

"There was an earlier contact with the bear prior to the event," Sheriff Gavin Roselles said. "The bear basically came back into the campsite. It wandered into a campsite a couple different times."

FILE PHOTO: A grizzly bear roams through the Hayden Valley in Yellowstone National Park in Wyoming, U.S. on May 18, 2014. REUTERS/Jim Urquhart/File Photo - RC18669AE8C0

A grizzly bear (not pictured) attacked and killed a person camping in Montana. (Reuters)

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A team of law enforcement and wildlife specialists has been assembled to track down the bear, officials said.

An initial report said the victim had been riding a bicycle at the time of the attack. That is not the case, Roselles said.

Lemon said his understanding is that the victim was part of a group on a bike trip.

The identity of the victim was not immediately released and further circumstances surrounding the attack were under investigation.

"Our first concern is the community’s well-being. The next step is to find the bear," Lemon said.

Officials did not say exactly where the attack occurred, but Roselles said there were other people camping in the vicinity of the attack.

A video camera from an Ovando business caught footage of a grizzly bear Monday night, wildlife officials said. A bear also got into a chicken coop.

Ovando saloon owner Tiffanie Zavarelli said it was the first fatal bear mauling that she knew of in the community, located along the Blackfoot River beneath a mountain range that rises into the remote Bob Marshall Wilderness, a 1,500-square mile (4,000-square kilometer) expanse of public forests. Residents of the area are accustomed to living in proximity to bears and know the risks, but the attack left them rattled, said Zavarelli, whose family owns Trixi’s Antler Saloon, which is named after a well-known trick horseback rider and roper.

In this July 9, 2009, file photo, the Bob Marshall Wilderness cuts a jagged line across the horizon as patrons leave Trixi's Antler Saloon in Ovando, Mont. (Eliza Wiley/Independent Record via AP, File)

"Everybody’s pretty shaken up right now. The population here is 75 — everybody knows everybody," Zararelli said, "The people from Montana, we know how to be ‘bear aware.’ But anything can happen."

Blackfoot Inn and general store owner Leigh Ann Valiton said the people of Ovando were "absolutely devastated" by the fatal attack.

Grizzly bears have run into increasing conflict with humans in the Northern Rockies over the past decade as the federally protected animals expanded into new areas and the number of people living and recreating in the region grew. That’s spurred calls from elected officials in Montana and neighboring Wyoming and Idaho to lift protections so the animals could be hunted.

In April, a backcountry guide was killed by a grizzly bear while fishing along the Yellowstone National Park border in southwestern Montana.

Ovando is on the southern edge of a huge expanse of wilderness that stretches to the border of Canada and is home to an estimated 1,000 bears — the largest concentrations of the bruins in the contiguous U.S. The area includes Glacier National Park.

In 2016, an off-duty U.S. Forest Service law enforcement officer was fatally mauled in the region after he collided with a grizzly while mountain biking in the Flathead National Forest.

Grizzly bears involved in attacks on humans can be trapped and killed if they are considered a continued public safety threat. Bears involved in non-fatal attacks are often spared in the case of a surprise encounter or if they are protecting their young.

Wildlife managers have sought to lessen the hazards with campaigns encouraging people who live near grizzlies to install bear-resistant garbage cans so the animals don’t come looking for human food scraps. They’ve also educated hunters and hikers on how to travel safely in grizzly country and the importance of carrying bear spray — Mace-like canisters of pepper spray that can be used to deter attacking bruins.

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It was not immediately known if the victim in Tuesday’s attack had bear spray or even any chance to use it.

An estimated 50,000 grizzlies once inhabited western North America from the Pacific Ocean to the Great Plains. Hunting, commercial trapping and habitat loss wiped out most by the early 1900s.

Grizzly bears have been protected as a threatened species in the contiguous U.S. since 1975, allowing a slow recovery in a handful of areas.