Several minutes into midnight, Baumgartner perpetrated the crime while on duty at HUB Mall, a student residence and indoor food court, during a routine circuit with four coworkers to replenish ATMs around the city of Edmonton, as a part of their employment with G4S Cash Solutions.
While refilling the TD ATMs, Baumgartner shot three of his coworkers with a .38-calibre revolver as they entered the secured vault located behind the machines, before locking them inside.
Michelle Shegelski, 26A fourth guard, Matthew Schuman, was severely injured in the shootings, sustaining brain injuries.
It is a requirement from the security agency to obtain a federal firearms licence, which includes a background check being run on the applicant.
[2][3] Several days after the killings, Baumgartner confessed to an undercover Royal Canadian Mounted Police officer in a British Columbia jail cell, saying: “I did it all.
On September 11, he was sentenced by Associate Chief Justice John Rooke to life in prison without the possibility of parole for 40 years, until 2052.