In 2005 unidentified men kidnapped separatist field commander Dokka Umarov's father Khamad, his wife, and one-year-old son. Several months previous, his brother Ruslan Umarov, father of four children, had also been kidnapped by masked men in uniform. His wife and son were later freed, but his father and brothers disappeared. According to some sources, Umarov's father, Khamad Umarov, was kidnapped back on May 5, 2008, by the Kadyrovite employees of the Oil Regiment ("Neftepolk") headed by Chechnya's First Deputy Prime Minister Adam Delimkhanov. In April 2007 Umarov declared his 74-year-old father was murdered in captivity. His sister Natalia Khumaidova was also abducted in Urus-Martan in August 2005 by "unidentified armed men"; she was released days later after local residents protested for her return. In the past years a cousin Zaurbek and nephew Roman Atayev were also kidnapped; nothing has been heard of these people since. Shortly after the Beslan hostage-taking raid in 2004, Prosecutor General Vladimir Ustinov suggested the practice of taking rebel leaders' relatives hostage. Memorial, who largely condemned such practices, blamed pro-Russian Chechen forces for the abductions. According to separatists, all the kidnapped persons were put into Ramzan Kadyrov's personal prison in Tsentaroy.