It's still dangerous out there: A West Glacier man was killed by a grizzly bear Wednesday afternoon while riding his mountain bike on a forested trail in the Halfmoon Lakes area south of Glacier National Park.

Flathead County Sheriff Chuck Curry identified the victim as Brad Treat, 38, of West Glacier. Treat grew up in the Flathead Valley and graduated from Flathead High School, where he was a standout distance runner, in 1996.

Authorities have closed the area around Halfmoon Lakes as the investigation continues. As of 8:30 p.m., the bear that attacked Treat had not been found.

Treat and another man were mountain biking on U.S. Forest Service land near Halfmoon Lakes on Wednesday, according to Curry. The initial investigation suggests the two bikers surprised the bear around 2 p.m. and Treat was taken off his bike by the animal. The second rider was able to escape uninjured and summon help.

Coming up on any bear suddenly is dangerous.  He probably came around a corner fast and was on the bear before he could stop or turn.   Sad.