This article is from a Namibian newspaper. Looks like just the pilot on board. Pilot's name confirmed and his next of kin informed.
"Sefofane Air this afternoon around two o'clock died when his Cessna 210 (registrasiemerke V5 BAT) approximately 20 km east of Wlotzkasbaken in the harsh Namib Desert between Swakopmund and Hentiesbaai cases."
RIP