MINNEAPOLIS (AP) — In east-central Wisconsin, whiteout conditions led to a chain-reaction pileup Sunday involving 131 vehicles on Interstate 41 in the Neenah area that killed one motorist and injured 71 others.

“I’ve been in the law enforcement business, this is my 27th year,” Winnebago County Sheriff’s Department Chief Deputy Todd Christopherson told the Milwaukee Journal Sentinel. “On scene, that was the worst conditions I’ve ever seen.”

It could take several days to clean up the wreckage, as the “vast majority” of the vehicles are destroyed, the sheriff’s department said. Authorities are still trying to piece together what happened.

The sheriff’s office plans to release the name of the person who died on Monday afternoon.