in a house siege by the Russian special forces on 17 September 2007. Vilayat Dagestan With the statements of the new Chechen separatist leader Dokka Umarov, published by Kavkaz Center on 1 October 2007, Khalilov was replaced by his deputy, Abdul Majid (Ilgas Malachiyev). Majid had begun his career during the Second Chechen War, fighting under Mashkadov and Ibn al-Khattab, before joining the Jamaat in 2005; this helped legitimize him as a rebel leader in Dagestan with the leaderships of both Chechen rebels and foreign fighters. Abdul Majid took the Jamaat oath to not attack civilians and was credited with bringing order to the group after the death of Khalilov. On 8 September 2008, he was killed in a battle in southern Dagestan on the border with Azerbaijan in a joint operation of Russian and Azeri special forces. Following the death of Abu Majid, Umarov (now as the leader of the self-styled Caucasus Emirate) appointed Emir Muaz (Omar Sheikhulayev) to lead the renamed Vilayat of Dagestan. Emir Muaz was killed on 5 February 2009 in a gunfight with Russian special forces in a suburb of Makachkala. He was replaced two months later by Emir Bara (Umalat Magomedov), who was in turn killed in a shootout at a police checkpoint in Makachkala on 31 December 2009. His place was then taken by Magomed Vagabov, whose leadership apparently resulted in the end to the ban on indiscrimate attacks against civilian targets. Vagabov was killed in a firefight when the federal forces surrounded him a house in the village of Gunib on 21 August 2010. The continued upsurge of violence in Dagestan since 2008 included the killing of Gen. Valery Lipinsky, the first deputy head of the Internal Troops in the North Caucasus; the sniper assassination of Dagestan's Interior Minister, Gen. Adilgerei Magomedtagirov; and the massacre of four policemen and seven alleged prostitutes at a bathhouse in Makhachkala. In 2009, at least 58 police officers were killed in Dagestan. The Vilayat Dagestan was responsible for a suicide attack on 6 January 2010 that killed six policemen; twin bombings in which two female bombers killed more than 40 people in the Moscow Metro in March 2010; and several suicide attacks against Russian security and military installations (such as the double bombing which killed 12 in Kizlyar). In February 2012, the Vilayat's then leader, Ibragimkhalil Daudov (aka Emir Salikh), was killed by Russian security forces.