MOSCOW: A former bodyguard to Russian President Vladimir Putin was murdered with a poison that produced symptoms remarkably similar to those that killed former spy Alexander Litvinenko, it emerged yesterday. Roman Tsepov died, aged 42, in 2004 after suffering severe radiation sickness brought on by a mystery substance he had ingested with food or drink. The case suggests that use of radioactive poisons - similar to the polonium-210 that killed Litvinenko - may be more widespread than previously thought. Tsepov, nicknamed King of the Shadows, is said to have had several powerful enemies but the identity of his killer...