Dokka Umarov
In response to the insurgent threats, Russian special forces cracked down on suspected terrorist organizations, making several arrests and claiming to have curbed several plots, and killed numerous Islamist leaders including Eldar Magatov, a suspect in attacks on Russian targets and alleged leader of an insurgent group in the Babyurt district of Dagestan. Dokka Umarov himself was poisoned on 6 August 2013, and died on 7 September 2013.