German investigators have confirmed that a car used by a contact of a fatally poisoned ex-KGB agent before the two men met was contaminated with the rare radioactive substance polonium-210, police said Monday. Still unknown is whether the Russian businessman Dmitry Kovtun was involved in the poisoning of Alexander Litvinenko, or a victim of it. He is reportedly being treated in Moscow for radiation poisoning, and his former wife, her children and her partner were being tested for radiation. Full Story