No foul play is suspected in the death of missing Wisconsin graduate student Eliotte Heinz, whose body was found in the Mississippi River Wednesday following a massive four-day search, police confirmed.

Authorities in western Wisconsin say there is no indication of criminal activity in the death of 22-year-old Eliotte Heinz, though the investigation remains ongoing. In an update Friday, the La Crosse Police Department said preliminary findings do not suggest any criminal conduct in connection with Heinz’s death.