A gunman opened fire at the Molson Coors Beverage Co brewing complex in Milwaukee on Wednesday.
The shooter killed five co-workers before he was found dead from an apparently self-inflicted gunshot wound.
According to Reuters, no one else was injured in the violence at the campus of more than 20 buildings.
The entire Molson Coors property was placed under security lockdown for several hours following the gunfire.
The body of the dead gunman, who was believed to have acted alone, was found in the same building as his five victims. The suspect was described by police as a 51-year-old Milwaukee resident and employee of Molson Coors.