Officials continued monitoring portions of the Mount Hood National Forest this weekend as they awaited test results on a cougar killed Friday they believe might be responsible for the death of a hiker

So far, they've found no trace of other cougars on the trails.

The Oregon Department of Fish and Wildlife has deployed about two-dozen cameras in the area to look for any evidence of cougar activity.

Officials used those cameras Friday to locate, and then shoot and kill, a cougar believed to have killed 55-year-old Diana Bober. But until they are able to use lab results to conclusively link that cougar to Bober's death, officials are keeping watch from afar.

"We haven't confirmed that this animal is the offending animal," said Rick Swart, an agency spokesman. "And so we need to continue to monitor the home range to see if anybody else shows up."

Cougars often travel alone and stick to their territories. Officials don't expect to find many other cougars in the area and, if they do, it might be only a handful.

Some 6,600 cougars are estimated to roam Oregon. Bober's death is the first believed to be linked to a cougar.

"For us this is unprecedented," Michelle Dennehy, a state spokeswoman, said of the attack on a human.

Dennehy said officials hope to have confirmation this week that it was a cougar, and not a different type of animal, that attacked Bober. Likewise, officials hope lab testing will confirm it was the cougar they shot Friday.

Dennehy said authorities are "fairly confident" both theories will be proven correct. That's because the state medical examiner's office determined last week that Bober's injuries were constant with a cougar attack. And there's only a slim likelihood that a different cougar would go into the area where Bober was found.

Although Dennehy said lab results could be finished this week, Swart, the other agency spokesperson, was noncommittal.

"I don't know that we have any expectations," he said Sunday night. "The sooner, the better, is our position. We're anxious for those results."

-- Brad Schmidt and Everton Bailey