Six people have been injured in an explosion at a truck company in Dodge Center, Minnesota.
Dodge County Sheriff Scott Rose told a press conference that two people have been airlifted to Region's Hospital in St. Paul with burn injuries following the explosion at McNeilus Truck and Manufacturing, off Highway Street East, at around 10:30 a.m.
A further two people were taken to a local hospital with injuries, and two more were treated at the scene for minor injuries.
The blast is thought to have originated in a painting booth in the long, narrow finishing building, and was of such power it damaged doors at both ends of the building.
What caused the explosion at McNeilus' sprawling complex is still to be determined, and though the families of the two burn victims have been contacted, the extent of their injuries are not known at this stage.
According to its website, McNeilus has been designing and manufacturing refuse vehicles and ready-mixed concrete trucks since 1970.
The company, owned by the Oshkosh Corporation, is the biggest employer in the southeast Minnesota city of Dodge Center, where it has a 145-acre campus.