calm people and repeat the rules in the local language of Ossetic, a gunman approached him, asked Betrozov if he was done, and then shot him in the head. Another father named Vadim Bolloyev, who refused to kneel, was also shot by a captor and then bled to death. Their bodies were dragged from the sports hall, leaving a trail of blood later visible in the video made by the terrorists. After gathering the hostages in the gym, the attackers singled out 15–20 adults who they thought were the strongest among the male teachers, school employees and fathers, and took them into a corridor next to the cafeteria on the second floor, where a deadly blast soon took place. An explosive belt on one of the female bombers detonated, killing another female bomber (it was also claimed the second woman died from a bullet wound) and several of the selected hostages, as well as mortally injuring one male terrorist. According to the version presented by the surviving terrorist, the blast was actually triggered by the polkovnik (group leader); he had triggered the bomb by remote control to kill those who openly disagreed about the child hostages and to intimidate other possible dissenters. The surviving hostages from this group were then ordered to lie down and were shot with an automatic rifle by another gunman; all but one of them were killed. Karen Mdinaradze, the FC Alania team cameraman, survived the explosion as well as the shooting; when discovered to be still alive, he was allowed to return to the sports hall, where he lost consciousness. The militants then forced other hostages to throw the bodies out of the building and to wash the blood off the floor. One of these hostages, Aslan Kudzayev, escaped by jumping out of the window; the authorities briefly detained him as a suspected terrorist. Beginning of the siege A security cordon was soon established around the school, consisting of the Russian police (militsiya), Internal Troops, Russian Army forces, Spetsnaz (including the elite Alpha and Vympel units of the (FSB) Russian Federal Security Service), and the OMON special units of the Russian Ministry of Internal Affairs (MVD). A line of three apartment buildings facing the school gym was evacuated and taken over by the special forces. The perimeter that they made was within of the school, inside the range of the militants' grenade launchers. No firefighting