Chad became on Monday the latest country to announce plans to withdraw from the International Criminal Court (ICC), complaining its effectiveness was "limited and uneven" and its activities were focused on Africa.

It follows Venezuela, Burkina Faso, Mali and Niger in starting the process to pull out of the ICC, based in The Hague, which prosecutes individuals for war crimes and crimes against humanity.

ICC member states voted on Friday to dismiss prosecutor Karim Khan following disputed allegations that he sexually assaulted a female member of his staff.

Khan, 56, categorically denies the accusations. His lawyer has said he will challenge "the lawfulness and fairness of the decision".

Chad's announcement follows "an in-depth review of the functioning of the International Criminal Court since it began operating in 2002, as well as its record whose effectiveness remains limited and uneven", a government spokesman said in a statement.