I remember this from a year or two ago: A jet went “missing” somewhere in Africa (don’t remember the country). Was there ever a resolution on it?
Still missing as of a year ago. Couldn’t find anything more recent.
I did a search of Pprune where they generally have an interest in all things to do with aircraft. The latest musings (because apparently nothing has been definitely discovered, is that there was possibly a scam involving two aircraft) and can be found here
The author of this piece does seem to have done some investigative work on the mystery.