In April 2005 , Russian special forces destroyed a small guerrilla unit during a battle in a residential area of Grozny after receiving intelligence that Umarov was with them .
Umarov was not found among the dead .
In April 2005 , Russian special forces destroyed a small guerrilla unit during a battle in a residential area of Grozny after receiving intelligence that Umarov was with them , yet he was not found among the dead .