This July 2012 photo shows Andrew Engeldinger working at Accent Signage in Minneapolis. Minneapolis Police Chief Tim Dolan told a Friday, Sept. 28, 2012, news conference that the gunman in Thursday's attack inside a Minneapolis sign company where four people were killed was 36-year-old Engeldinger. Police also say that Engeldinger had been fired hours before the attack. (AP Photo/Finance and Commerce, Bill Klotz)

Photo by: Bill Klotz

This July 2012 photo shows Andrew Engeldinger working at Accent Signage in Minneapolis. Minneapolis Police Chief Tim Dolan told a Friday, Sept. 28, 2012, news conference that the gunman in Thursday's attack inside a Minneapolis sign company where four people were killed was 36-year-old Engeldinger. Police also say that Engeldinger had been fired hours before the attack. (AP Photo/Finance and Commerce, Bill Klotz)