The search for mountain lions along a remote trail in Colorado where a solo hiker was fatally attacked ended Monday after authorities killed two of the predators — including one with human DNA on its paws — but could not find a third.

The victim of the New Year’s Day attack was identified as a 46-year-old woman from Fort Collins, about an hour’s drive from the attack site on the Crosier Mountain trail, east of Rocky Mountain National Park. It was the first fatal mountain lion attack in Colorado since the late 1990s, and the fourth killing in North America over the past decade.

Victim Kristen Marie Kovatch died of asphyxia due to having her neck compressed, the Larimer County Coroner’s Office said in a statement Monday. The injuries were “consistent with a mountain lion attack” and her death was ruled an accident, the coroner’s office said.