A major pileup crash occurred during icy conditions on I-94 in western Wisconsin on Thursday morning.

The crash began in the Oseeo area just before 6 a.m. on I-94 at mile marker 96. State police say that one of the initial crashes involved a semi truck on fire in the median with two passenger vehicles pinned underneath, and that many secondary crashes and spin-offs then occurred.

The pileup reportedly involves about 100 vehicles, many of them tractor trailers.

“There is a massive crash involving many vehicles both directions Northfied to Osseo and Osseo to Northfield,” the Jackson County Sheriff’s Office said.

There were no injuries or fatalities, according to the Jackson County Wisconsin Sheriff’s Office.

The pileup forced officials to shut down both directions of I-94 between exits 88 eastbound (Osseo) and 115 westbound (Black River Falls).