A body was discovered Friday in Lake Winnebago.
According to the Fond du Lac County sheriff's office, a fisherman spotted the body floating at about 2:15 p.m.
The caller provided GPS coordinates to sheriff's officials and they found the body about three miles west of Brothertown in Calumet County.
Fond du Lac County sheriff's Sgt. Ryan Waldschmidt told The Post-Crescent an empty vehicle and boat trailer have been sitting in a parking lot on the Winnebago County side of the lake for five days.
He hadn't heard of any reports of an empty boat drifting onshore.
The Calumet County Sheriff's Department is investigating and an autopsy is scheduled for Saturday in Fond du Lac County.