 The first of these, and the most evident, is linked to the decision by Déby to search a third presidential mandate, modifying the Constitution with the help of the solid majority he could count on in the National Assembly; precisely in the day of the coup the necessary constitutional amendments were being rushed through the Parliament.This generated strong tensions in the inner circles of power, especially among the Zaghawa, Déby's ethnic group; and the coup saw the participation of senior Zaghawa officers, and important political allies of Déby were thought to have been involved, like Daoussa Déby, half-brother of the President, and the Erdimi twins, Tom and Timam, nephews of Déby.The suspicions regarding Daoussa Déby were to prove groundless, while on December 12, 2005 the Erdimi brothers were accused by the government of being the true masterminds behind the failed coup.