NEWYou can now listen to Fox News articles!Montana authorities are expanding a rugged, multi-agency manhunt for a former ...

The manhunt for a military veteran suspected of fatally shooting four people at a bar in Montana stretched into a fourth day Monday.

The manhunt for an Army veteran suspected of killing four people at a bar he frequented has expanded in the rugged Montana terrain, authorities said.

The suspect in the quadruple killings, 45-year-old Michael Brown, remained a fugitive, officials told USA TODAY on Aug. 4.

Authorities are searching for 45-year-old military veteran Michael Paul Brown who killed four people at a Montana bar on Aug.