A tractor trailer overturned near Columbus, Montana, on Saturday night, causing minor injuries to the driver.

According to the Billings Gazette, the incident occurred after the truck drifted off the eastbound lanes of Interstate 90, near mile marker 408. It happened around 6 p.m.

The truck was carrying a load of frozen McDonald’s has browns. The driver reportedly told Montana Highway Patrol officers that he was unsure how it happened.

He suffered minor injuries, and was taken to a hospital for treatment.

The driver wrote a Facebook post on Sunday morning, stating that he’s “alright.”

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MHP Trooper Chan Barry said drugs or alcohol were not involved.