Parts of a national forest near Anaconda, Montana, were closed late Saturday as authorities expanded their search for the gunman accused of killing four people at a bar on Friday morning.

The manhunt for a suspect in the killing of 4 people in Anaconda, Montana, continued on Saturday on the ground and in the air, including multiple local, state and federal agencies, authorities said.Michael Paul Brown remains at large after he allegedly walked into The Owl Bar and opened fire on Friday before fleeing the scene,

Authorities urged residents to stay inside and on high alert because they consider Michael Paul Brown armed and dangerous.