Gunman shoots at least 4 people dead at Montana bar, authorities launch intensive manhunt

It is unclear what led to the shooting, which happened at about 10 a.m. at The Owl Bar. The victims' conditions have not yet been released.

Brown's house was cleared by SWAT, but he is still at large, according to GCSO.

Montana Highway Patrol and Anaconda authorities asked the public to avoid the area of Stumptown Road and Anderson Ranch Loop Road.

Anaconda is less than 80 miles southeast of Missoula.

Gov. Greg Gianforte said he is praying for the victims in a Facebook post.

"I'm closely monitoring the situation involving an active shooter in Anaconda," Gianforte wrote. "Please join Susan and me in praying for the victims, their loved ones, and the brave law enforcement officers responding to this tragedy."

Senators Steve Daines, R-Mon., and Tim Sheehy, R-Mont., also said they are keeping an eye on developments in separate social media posts.

"We are monitoring this tragedy and are in touch with local authorities," Sheehy wrote in an X post. "We thank law enforcement for their ongoing efforts to protect our communities and pray for the victims, their families, and the entire Anaconda community."

The Anaconda-Deer Lodge County Law Enforcement Center, GCSO, Montana Highway Patrol, FBI and ATF did not immediately respond to inquiries from Fox News Digital.

The Associated Press contributed to this report.