Ibni Oumar Mahamat Saleh (December 31, 1949 – disappeared February 2008) is a Chadian politician and opposition leader who headed the Party for Liberties and Development (PLD).
[citation needed] On February 3, 2008, during a battle between government forces and rebels in N'Djamena, Saleh was arrested by unidentified military personnel, presumably presidential guards, according to the PLD.
[citation needed] The three French Mathematical Societies, SFdS, SMAI and SMF have created in 2009 the prize Ibni Oumar Mahamat Saleh in his memory.
[8] According to an investigation in 2020 by online newspaper Le Média [fr], Mahamat Ismaïl Chaïbo [fr], then executive at Agence nationale de sécurité, moved Ibni Saleh severely beaten but still alive, during the night of February 3, 2008 from a cell in the Farcha district of N'Djamena to the presidential palace, downtown.
[11] The commission heard testimony from over 1,500 people, including high-ranking officials and the Chadian President himself; its report was submitted to Déby on August 5, 2008 and publicized a month later on September 3.
This report concluded that Saleh had been arrested by the army at his home in N'Djamena on February 3, but said that it was not possible to reach a conclusion on what happened to him afterwards due to lack of evidence, while noting that "people think he is now dead".
However it is unlikely the French government will release evidence incriminating Déby's team, especially when France is soliciting Chadian help for their strikes against rebel forces in Mali of January 2013.