April 6 - In retaliation to the attack on Tiero and Marena Chadian forces supported by helicopters, attacking rebel positions close to the Sudanese border.[27] April 9 - Chadian troops clash with Sudanese forces inside Darfur, whose violence was called by UNHCR official in the area "apocalyptic".[28] April 13 - The former Chadian President Goukouni Oueddei is received in Libreville by the Gabonese President Omar Bongo, pleading the latter to act as a mediator in the Chadian crisis.[29] April 14 - Following the Chadian-Sudanese army clash in Sudan, Chadian Foreign Minister Ahmad Allam-Mi meets Sudanese President Omar al-Bashir in an attempt to defuse tensions, but he also insists that the Sudanese government is supporting Chadian rebels and the Janjaweed.[30] April 17 - In a meeting held in Libreville, Gabon, former Chadian President Goukouni Oueddei sees Idriss Déby and offers his disponibility to meet the rebels and act as a mediator.[31]