Owatonna, MN (KROC AM News) - There was a big traffic mess near Owatonna on Thursday.

The Minnesota State Patrol says it began around 9:30 AM on northbound I-35 a mile north of Highway 14 when a vehicle went into the median.

While a trooper was assisting that driver, another vehicle went into the median behind him. A short while later, more vehicles became involved in separate crashes. There were so many, that section of the interstate had to be shut down for a few hours.

A total of 20 passenger cars and six jackknifed semi-trucks were involved in all the crashes.

No serious injuries were reported

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