A manhunt is intensifying for the gunman who allegedly killed a bartender and three patrons at a bar in southwestern Montana, authorities said.

The names of four people killed in a bar shooting in Anaconda were released on Sunday by the Montana Department of Justice, as the suspect, Michael Brown, remains at large. The state identified the four victims who were killed in Friday morning’s shootings as 59-year-old Daniel Edwin Baillie,

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