He is responsible for multiple war crimes including murder, rape, forced marriage, torture and looting.

He is a son of Abba Adoum Kette,[1] an influential diamond collector from Bria, and allegedly a brother of Abdoulaye Hissène.

[3] During the Central African Republic Bush War he led faction of Convention of Patriots for Justice and Peace (CPJP) based in Nzacko.

[14] In May his forces were reportedly present in Gbogbo village on Yalinga axis engaging in widespread looting of the population.

[19] From 8 to 9 December his forces clashed with Russian mercenaries in Akocho site north of Bria with 50 people killed on both sides.

[20] The UK government imposed sanctions on Mahamat Saleh for overseeing "rape and other forms of sexual and gender-based violence" on 8 March 2023.