Paul Biya, 93, had been in Switzerland since early June. Mr Biya’s prolonged absence during these weeks intensified concerns about the health of the 93-year-old leader. Key points and original sources are listed below.

• Paul Biya, 93, had been in Switzerland since early June. The prolonged absence stirred questions about his health and plans for succession.S1

• Mr Biya’s prolonged absence during these weeks intensified concerns about the health of the 93-year-old leader. premiumtimesng.com/">Premium Times Nigeria.S2