Transcript for Gas explosion rocks Wisconsin town
Jon Karl, thanks very mu Michael. Now toakings overnight. A deadly gas explosion rocking a Wisconsin town. You see their there. Buildings destroyed,ars on fire, multiple people S T thhospital. S Alex Perez has latest. Reporter: Thisxplosion ripping apart maitreet in sun prai Wisconsin. Levels several buildings, ting down downtown sun praiand sending hugelu of black smoke through the air. We felt this boom and I ought something landed on our roof it was so loud. The tank exploded, caused E building to be on fire. Reporter: They're battling it throughout the nigcing police to evacuate residents within a half mile dius. We need to getrybodyy from the building and we N to ear the perimeter. Epr: Evacuions were under way a leak tentially saving lives when 40 minutes later explosionent waves through the community. There was this big boom and it knocked me to the ou and I felt it like it took theeath out of my body. Ran outsind I saw a mushroom cloud. Reporter: Authorities say two firefighters werered. E of them dying at the hoal. Several other first resnders treated at the scene. And U can see behind me here orities have created aug Ty perimeter. They are still not allowing anyone near that explosion site. Investors say they must first inspect all O those damaged stru. Robin. Want everybody T stay safe. Thank you. N that amazing survival story.
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