Russia's president vows Nemtsov's killing will be solved, guilty punished

President Vladimir Putin pledged on Thursday that the killing of Russian opposition leader Boris Nemtsov would be fully investigated and that the guilty, whoever they might be, would be punished.

Nemtsov was shot dead in February this year as he walked across a bridge near the Kremlin in Moscow.

"I do not think that a person must be killed (for this). I will never accept this. I believe that this crime must be investigated and punished."