Karlstad, MN – Kittson County (trfnews.i234.me) – A 59-year-old man was injured Thursday morning, July 11, after an explosion at Hanson Trucking in Karlstad, according to Kittson County Sheriff Matt Vig.
Authorities say Wayne Martinson was using a grinder inside a semi feed trailer at the time of the incident, which occurred around 9:35 a.m. Investigators believe flammable fumes inside the trailer ignited, triggering the explosion.
Martinson was transported by ambulance to Sanford Medical Center in Thief River Falls. His condition has not been publicly released.
The explosion remains under investigation.
I’m Chris Harper reporting for TRF News.