UPDATE (5:50 p.m. EST):

According to CBS Chicago, the gunman was fired earlier in the day. He went home, retrieved a gun, returned to the plant, and began firing. He reportedly had a suppressor on his firearm.

Milwaukee Mayor Tom Barrett confirmed multiple fatalities took place.

The Milwaukee mayor says there are multiple people dead following a shooting at the local Molson Coors Brewing Co. facility. An exact number of victims has yet to be confirmed. Police say the situation is now under control. Stay here for updates: https://t.co/9JTbIMeWJN — Twitter Moments (@TwitterMoments) February 26, 2020

Molson Coors released a statement about the situation:

"There is an active situation at our Milwaukee facility and we are working closely with the Milwaukee Police Department," Molson Coors Beverage Company told ABC News in a statement. "Our top priority is our employees and we’ll provide updates in conjunction with the police as we are able."

ORIGINAL POST

Police in Milwaukee, Wisconsin are responding to an active shooter scene at the MolsonCoors headquarters. According to the Milwaukee Journal Sentinel, seven people, including the shooter, are dead.

Employees were made aware of the active shooter situation via email. They were told the shooter "was in or near the second-floor stairwell of the sprawling factory’s Building 4," the Journal Sentinel reported.

The Milwaukee County Sheriff's Office, Marquette University Police Department and the U.S. Marshals were dispatched to the scene, as well as paramedics from both Milwaukee and West Allis.

Active Shooter at MillerCoors In Milwaukee:



- Witnesses say employee opened fire

- Multiple casualties reported

- Scene remains active

- ATF respondingpic.twitter.com/lwiMEFmTiA — Breaking911 (@Breaking911) February 26, 2020

Nearby businesses, including Harley Davidson, were under lockdown. Schools, including Marquette High School and Story Elementary School, were also under lockdown.

The Milwaukee Police Department is asking people to stay away from the area. The scene is still considered active.

MPD is investigating a critical incident in the 4000 block of W. State Street. Please stay clear of the area at this time. — Milwaukee Police (@MilwaukeePolice) February 26, 2020

Media staging area at this time is 35th and State. This is an active scene, take Highland Blvd as an alternative route. — Milwaukee Police (@MilwaukeePolice) February 26, 2020

This is still an active scene. Please use an alternative route such as Highland BLVD and or N. 27th St at this time. — Milwaukee Police (@MilwaukeePolice) February 26, 2020

The Bureau of Alcohol, Tobacco and Firearms (ATF) is on the scene to help investigate.

BREAKING: ATF (Milwaukee, WI Field Office) is responding to the scene of an active shooter at the MillerCoors Building in Milwaukee, WI. pic.twitter.com/Z4fj0oinm5 — ATF Chicago (@ATF_Chicago) February 26, 2020

This is a breaking news story. Please check back for updates.