** FILE ** Alexander Litvinenko, former KGB spy and author of the book "Blowing Up Russia: Terror From Within", is seen photographed at his home in London in this Friday, May 10, 2002 file photo. Prosecutors accused a former KGB agent Andrei Lugovoi Tuesday, May 22, 2007 of murder in the radioactive poisoning of fellow ex-operative Litvinenko and sought his extradition from Russia. Lugovoi met with Litvinenko at a London hotel only hours before the former agent turned Kremlin critic became ill with polonium-210 poisoning. Lugovoi has repeatedly denied any involvement in interviews with the police and media. (AP Photo/Alistair Fuller)