Transcript for Multiple people killed at MillerCoors building in Milwaukee
other news tonight, a deadly workplace shooting. We just learned from the mayor of Milwaukee that there are multiple people dead, including the shooter. The first word of an active shooter at the molson-coors campus in Milwaukee today. Hundreds of officers, including the FBI responding. A massive show of force there. Officers climbing to the roof. The neighborhood on lockdown. Sources say that shooter was disgruntled, a former employee, in fact, and here's our chief justice correspondent Pierre Thomas with late reporting. Reporter: Shots ringing out at the molson-coors sprawling beer plant in Milwaukee. Confirmed active shooter. Shooter's still at large. Reporter: At roughly 2:00 P.M., some 600 workers ordered to shelter in place, as an army of police respond. Television helicopters capturing it all. You can see there's a handful of officers out with their rifles, they just came out of this stairwell on this rooftop and they're going into another one. Reporter: There are reports of injured. They're doing cpr on a guy here. You can hear sirens in the background. So, we still have even more first responders heading this way. Reporter: Neighboring schools placed on lockdown. Worried families rushing to the scene. I was afraid for dear life with my baby. Came over as quick as I could and see if I could get him out of here. Reporter: Tonight, sources telling ABC news at least eight people were shot. We are told the shooter is dead. Described by sources as a disgruntled employee. This remains an active scene. There are multiple fatalities. It is a horrible, horrible day for the employees. Let's get to Pierre Thomas with us live tonight. And we're aware that the FBI is already on the scene? Reporter: That's right, David. The FBI is assisting. ATF is there, as well. All hands on deck with such a large crime scene. One source telling us it may be hours before the complex is completely cleared. David? Pierre, thank you. Next, the midair emergency onboard a united flight from
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