Fox 11 reported the Outagamie County Sheriff’s Office said three trays were found in a ditch early in the morning.
The mail was found “near the intersection of highways 96 and CB, near the Appleton International Airport” and was turned over to the postal service.
“The United States Postal Inspection Service immediately began investigating and we reserve further comment on this matter until that is complete,” spokesman Bob Sheehan told the news station.
The postal service did not disclose how many ballots were included in the trays.
The sheriff’s office told the Washington Examiner that it was “mail going to the post office.”