Five men received long prison terms on Monday for the killing of prominent Kremlin critic Anna Politkovskaya after a trial that failed to reveal who had masterminded the Russian journalist's murder.

Politkovskaya, an investigative reporter who uncovered state corruption and rights abuses, especially in Chechnya, was gunned down in the lobby of her Moscow apartment block at the age of 48 on Oct. 7, 2006.

The Russian authorities deny any role in her death.