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.
The ICC prosecutor opened a preliminary examination in 2004 to assess whether to formally investigate alleged crimes against humanity and war crimes by government, rebel, and paramilitary forces, taking into account the progress of peace talks in Colombia