BILLINGS, Mont. (AP) – A 63-year-old Montana man was identified Monday as the victim of a fatal bear attack in Yellowstone National Park as officials awaited results of DNA testing to determine if a grizzly captured nearby was responsible.

Seasonal park employee Lance Crosby of Billings was killed last week while hiking alone off-trail without bear spray, officials said. He was an experienced hiker and his wounds indicated he tried to fight back, officials said.

Crosby was the sixth person killed since 2010 by grizzlies in the greater Yellowstone area, which has an estimated 750 of the animals and includes the park and surrounding portions of Montana, Idaho and Wyoming.

Encounters between humans and grizzlies have risen sharply in recent decades as the region’s population of the federally protected threatened species has expanded. But relatively few run-ins lead to death or injury, and park officials say the probability of being attacked by a bear is only slightly greater than the chance of being struck by lightning.

Rangers on Friday discovered Crosby’s body covered by pine needles and dirt and found at least two sets of tracks that suggested an adult female bear and at least one cub were involved in the attack, officials said. Park biologists set a trap that caught an adult female bear at the scene of the attack but not the cub.

If testing confirms the sow captured Friday was involved in Crosby’s death, it will be killed, Yellowstone Superintendent Dan Wenk said. The cub, if captured, could be killed or adopted by a zoo or rehabilitation center.

The traps remained in the area Monday, and cameras were placed nearby to try to get images of any passing wildlife, Wenk said.

Crosby had worked as a nurse in the park’s medical clinics over five seasons and was described as an experienced hiker.

“At this point in time, I have no knowledge that it could have been avoided,” Wenk said. “He was in an area that’s frequently used, a popular area that people went to. It’s not like he was bushwhacking through dense forest.”

His body was found about a half-mile from the nearest developed trail, near an area known as Lake Village. Bruising around puncture wounds on Crosby’s forearms suggested he had tried to defend himself, officials said.

Members of the victim’s family said through a park spokeswoman that they did not plan to release a statement or conduct interviews and asked that all media requests be directed to park officials.