The Milwaukee Police Department said it was investigating a “critical incident” at an address around the Molson Coors headquarters in Milwaukee, Wisconsin, on Wednesday afternoon. 
The company sent an email to employees alerting them to an active shooter in or near the facility’s south packaging building, the Milwaukee Journal Sentinel reported.
Sources told CBS 2 that there are multiple casualties, though police have not released such information.
Molson Coors Beverage Company is the parent company of Molson Coors, which was known as MillerCoors until recently.
Police have asked residents to stay clear of the area.