Gabon ratified the Rome Statute in 2000. On 29 September 2016, following a referral by the government of Gabon, the ICC announced a preliminary examination into alleged crimes after May 2016, related to the contested 2016 presidential elections
In November 2010, the ICC prosecutor announced the opening of a preliminary examination into a situation of armed conflict, largely between Nigerian security forces and the terrorist group Boko Haram.