Four days after authorities said a lone gunman walked into a Montana bar, brazenly opened fire and killed a bartender and three patrons, the suspected shooter, identified as a former U.S. Army solider, remained on the run.

The quadruple shooting, officials from multiple law enforcement jurisdictions reported, took place on Friday, Aug. 1 at The Owl Bar in the rural town of Anaconda in Deer Lodge County, just over a 100-mile drive west of Bozeman.

The Montana Division of Criminal Investigation (DCI) reported the killings took place at about 10:30 a.m. local time and, during a weekend press conference in southwest Montana, State Attorney General Austin Knudsen identified the four victims as local residents aging in range from 59-75 including a 64-year-old woman who tended the bar.