Two Chechens are reported to have been arrested on suspicion of killing investigative reporter Anna Politkovskaya. The pro-Kremlin daily paper Komsomolskaya Pravda reported that the men were detained following an analysis of photographs from military satellites taken on the day of the murder. Ms Politkovskaya was shot dead outside her home in October. She had been working on a story about torture in Chechnya at the time of her death. Suspicions fell on the Kremlin, despite official denials of any involvement in the killing. The following month, the former Russian agent Alexander Litvinenko, who had been investigating her murder, was also killed. A close friend told The Sunday Telegraph that Mr Litvinenko, a critic of Russian President Vladimir Putin, had no doubt he was poisoned at the command of the Russian government.Ms Politkovskaya was a critic of Kremlin policy in Chechnya, where she alleged officials used abduction and torture in a campaign against separatist insurgents. Komsomolskaya Pravda quoted sources close to the investigation as saying the two men were detained following an analysis of satellite photos.