Environmental issues in Kazakhstan at the Semipalatinsk nuclear testing facility (in fact a large zone south of Kourchatov (Курчатов)) and along the Chinese border. The Central Asian Regional Environmental Center is located in Kazakhstan, which fosters regional cooperation on environmental issues. Most of Kazakhstan’s water supply has been polluted by industrial and agricultural runoff and, in some places, radioactivity. The Aral Sea, which is shared with Uzbekistan, has shrunk to three separate bodies of water because of water drawdowns in its tributary rivers. A Soviet-era biological weapons site is a threat because it is located on a former island in the Aral Sea that
Terrorism and counter-terrorism in Kazakhstan they have the right to certain part of Kazakhstan's territory" threaten Kazakhstan. In December 2005 the KNB extradited Rustam Chagilov, a suspected terrorist, to Russia. KNB officials detained an ethnic Uzbek and alleged member of HuT in Taraz, South Kazakhstan in April 2006. The KNB accused him of organizing an HuT cell Qoqon, Uzbekistan and extradited him to Uzbekistan. Kenzhenbulat Beknazarov, spokesman for the KNB announced on 22 December 2006 in Astana that an HuT cell-network active in multiple towns had been shut down. Beknazarov said, "Computers, more than 25,000 pamphlets, some 70 copies of religious extremist books and advanced