Umarov succeeds Abdul-Khalim Sadulayev, who was killed by pro-Russian forces on June 17.
A statement on a separatist website posted on June 21 said Umarov had taken over as president the day Sadulayev was killed.
Umarov, a long-time guerrilla leader, previously served as vice president in the self-declared government.
The Chechnya Conflict
The Chechnya Conflict
The aftermath of a December 2002 Chechen resistance attack on the main government building in Grozny (epa)
CHRONOLOGY
The fighting in Chechnya has raged, with short breaks, since 1994. It has brought misery, death, and destruction to the North Caucasus republic and to Russia as a whole. View an annotated timeline of the conflict.
