 On September 17, 2007, Russian special forces launched an operation in the Dagestani settlement of Novy Sulak.Two gunmen were blocked in a private residence by several hundred heavily armed republican and federal MVD troops; after the fighters refused to surrender, a 12-hour gun battle ensued during which the MVD troops were reinforced by the FSB "Vympel" special forces unit.According to the official information, only two troops were wounded in the firefight, but according to IWPR one was killed and ten were wounded.