He died in a car accident as he was on his way to the airport early in the morning of May 25 as he was on his way to launch a maternal health campaign in Kigali, Rwanda, according to the UNMC's site.
The BBC noted
it was poignant that he died in the early hours of 25 May, designated Africa Day.
"He insisted it be called Africa Liberation Day, not just Africa Day, because that sounds like celebrating something in the past whereas Africa's liberation is a struggle still to be achieved."
He sounds like a remarkable man. Prayers for him and his family and all who are affected by his death.