Multiple people were killed in a mass murder at the Molson Coors Brewing Co. campus in Milwaukee, Wisconsin, on Wednesday afternoon, according to several reports.

What are the details?

The Milwaukee Journal Sentinel reported that at least seven people died, including a perpetrator, in what was initially described as an "active" and "critical incident." The Journal Sentinel quoted dispatch conversations from first responders, citing one fire commander saying, "I just overheard on the radio seven — seven — victims. We might want to get some more med units here."

A second commander said over the radio, "I just had a police officer inform me that the shooter committed suicide and (the officer) believes they have six victims besides the shooter."

Milwaukee Mayor Tom Barrett confirmed to reporters Wednesday afternoon that the shooter was among the dead, but the mayor did not disclose the number of people killed, according to the Associated Press. "It is a horrible, horrible day for the employees here," Barrett said. "It's a very rough day for anyone who is close to this situation."

The New York Times reported that the gunman was "apparently a disgruntled employee." Rep. Gwen Moore (D), who represents the district where Milwaukee is located, told the outlet that the shooter was a Molson Coors employee who was in uniform.

President Donald Trump told reporters during an unrelated press conference that a "wicked murderer" had killed several people in Milwaukee, according to Fox News. The president added, "A number of people were wounded, some badly wounded. Our hearts break for them and their loved ones. It's a terrible thing."

