An area on the remote North Fork of the Flathead remains closed this week, as staff with Montana Fish, Wildlife & Parks investigate the latest bear attack in Montana.

And they're also hoping to learn whether the bear was actually a grizzly, which are known to frequent that area west of Glacier National Park, or a black bear, which are also quite common.

The 73-year-old woman who was attacked after the bear exploded out of the brush has been undergoing treatment at a Kalispell hospital.

Get our free mobile app

FWP says the attack happened Sunday afternoon along Trail Creek, which is north of Polebridge and within 5 miles of the Canadian border. The agency says the woman was with her husband, and their dog when the bear suddenly appeared along the creek bank and attacked.

RELATED: Why Bear Spray is No Longer an Option in Montana

Fortunately, the husband was carrying bear spray and was able to force the bear into retreating. The couple were then able to make it back to their car and get to where they could call for help. The A.L.E.R.T. air ambulance was called in to fly her out for treatment.

Area closed for investigation

FWP wardens and bear specialists are continuing to follow up on the attack, which happened in the place known as the "Bubble ups". That;'s where Trail Creek disappears underground and then rises to the surface downstream, which is a popular spot to visit. The immediate area has been closed as a precaution.

READ MORE: Man survives attack by "mega bear"

The state says the attack is another example of the need to be especially cautious this time of the year, as the bears are active and preparing to hibernate. They say it's also a reminder to always carry bear spray, and be "bear aware". FWP says it's critical to make noise, especially when in brush.

Fall is Best Season in Troy, MT