hree people were killed and at least four were seriously injured on Monday when a boiler exploded on the south side of St. Louis, Missouri.

ABC 15 reported that a van-sized piece of a boiler went airborne just before 8am and crashed through the roof of a building that houses Faultless Healthcare Linen. Two of the injured victims are in critical condition while the other two are in serious condition.

Few details are available at this time.