A worker has been killed in an explosion at a welding company in Minnesota.
WCCO reports that a 37-year-old man was welding a pontoon boat at Crystal Welding, in Dayton, at 9:17 a.m. Wednesday when the blast occurred, killing him.
According to FOX 9, witnesses described the incident as a "boom, with the ground shaking" at the company's quarters on 113th Avenue North, just off Interstate 94.
The station says it is not yet clear what caused the explosion.
Authorities are treating the occurrence "as a tragic accident," according to City Administrator Bob Derus, who told the Star Tribune: "We believe it was work-related."
The newspaper notes that the Occupational Safety and Health Administration will be investigating the man's death. His identity has not yet been released.