Chadian Prime Minister Pascal Yoadimnadji died Friday at a Paris hospital where he was being treated for cardiovascular problems, the African nation's embassy said. He was 56.

Ousman Kadallah, the embassy spokesman, said Yoadimnadji died at midnight at Val de Grace military hospital in Paris. The spokesman said he had no immediate information on a funeral service or on who would replace Yoadimnadji.

Chadian President Idriss Deby appointed Yoadimnadji, a lawyer, as head of government in 2005. He replaced Moussa Faki Mahamat, who had resigned.

Deby seized power in a 1990 coup. Chadian rebels aiming to topple him have clashed sporadically with government forces since 2005. The competition for power in the central African nation has become more intense since Chad began exporting oil in 2003. In April 2006, a rebel group reached the capital, N'djamena, before it was crushed by government forces.

There are also fears that Chad's conflict is being worsened by a spillover of the violence in Sudan's western region of Darfur.