Nigeria has criticised what it calls the "incessant harassment of its citizens in Ghana and the progressive acts of hostility towards the country by Ghanaian authorities".
A Kenyan governor and four of his children have been arraigned in court over the alleged embezzlement of public funds amounting to 73m Kenyan shillings ($675,000; £511,000).
Liberia's President George Weah has come under criticism for not personally receiving a petition from protesters campaigning for anti-rape laws to be strengthened.
French President Emmanuel Macron has been urged to intervene on Ivory Coast's President Alassane Ouattara's bid for a third term in October's election - which his opponents say is unconstitutional.
Supporters of the former president of Ivory Coast, Laurent Gbagbo, say they will file his candidacy for October's election even though a court has ruled he is not eligible to stand due to a previous conviction.