A pedestrian noticed 60-year-old Herc Croeser’s body from a bridge in the Tammerkoski canal on Wednesday in Tampere.
The canal flows past the Ilves hotel where Croeser stayed while attending a conference two weeks ago.
Croeser’s family in South Africa expected him back on Saturday but he never boarded the plane in Finland.
The canal also flows past a pub where he reportedly went for a drink before his disappearance.
Tampere police told Beeld there did not seem to be any indication of criminality.