The one that I know was a Piper Navajo of Air Zanzibar and was being flown from Nairobi by its owner Peter Hendriks to its base in Zanzibar, we are told it also had a spare engine on board.
I was personally involved in the search and rescue and we flew on the intended track for about 3 days and also searched the slopes of Mt Kilimanjaro on the Kenyan side around Loitokitok.
It was eventually found to have crashed on the same slopes after few months had passed.
Never seen the report from TCAA on this accident, must be a good reason to check on it.