The Committee to Protect Journalists are on one side, Mother Russia on the other.
The Committee to Protect Journalists insists that Russian prosecutors were investigating Chechen police related to the murder of Anna Politkovskaya. Russian officials deny this claim.
What Econo-Girl thinks happened was that Russians told this "investigating Chechen police" story to visiting U.S. journalists so they wouldn't look so bad. The visiting U.S. journalists told it to The Committee to Protect Journalists, who leaked it.
Newsflash: the Russians were lying. They aren't investigating who killed Anna Politkovskaya. They don't care. Just like they don't care about the other dozen journalists killed since Putin came to power. And they never will.