(ST. LOUIS) -- Three people were killed and several others seriously injured after a boiler exploded at a building in St. Louis, Missouri, sending a piece of equipment flying into the air and through the roof of another building, fire officials said.
The boiler explosion at the Loy-Lange Box Co. left one person dead in that building, authorities said at a news conference Monday morning.
After the explosion, a piece of the boiler was tossed into the air and pierced the roof of a nearby building, the Faultless Healthcare Linen plant, killing two people, officials said.
Two people were left in critical condition and two others suffered non-life-threatening injuries, the fire department said.
The mayor's director of communications described the piece of the boiler as "van-sized."
Mark Spence, COO of Faultless Healthcare Linen, said in a statement, “Our concern first and foremost is for our affected employees and those of Loy Lange and their families. ... We immediately will be giving what practical help we can to our employees and their families."
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