Updated

Fifteen people have been injured in a pileup involving nearly 40 vehicles on a foggy Wisconsin highway.

WLUK-TV reports that Appleton Medical Center had 14 patients in fair or good condition and one in serious condition following the accidents Friday morning. Foggy conditions are believed to have led to the accident shortly before 8 a.m.

The Appleton Post-Crescent reports that 31 cars were involved in one set of crashes while another seven collided about half a mile away.

The accidents occurred in Outagamie County on Highway 41 about 115 miles north of Milwaukee.