Deputies spent Saturday traversing a rugged mountainous area of Montana with helicopters overhead as a manhunt for a military veteran suspected of fatally shooting four people at a bar stretched into a second day with no capture.

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

A shooting at a Montana bar left four people dead Friday, prompting a lockdown in a neighborhood several miles away as authorities searched for the suspect in a wooded, mountainous area. The shooting happened around 10:30 a.