article_snippet: And as thousands of people united near the site of Boris Nemtsov's death, conspiracy theories swirled over who killed staunch Putin critic as Putin walked near the Kremlin with Putin Ukrainian model companion.
article_snippet: Several possible motives were being investigated, the Investigative Committee for the Russian Federation said, including the prospect that the shooting was a "provocation to destabilize the political situation in Russia.
article_snippet: the Investigative Committee for the Russian Federation is also exploring the possibility that the killing is related to the Charlie Hebdo terror attack in Paris or Nemtsov's business activities, the Investigative Committee for the Russian Federation said.
article_snippet: the Investigative Committee for the Russian Federation is offering a reward of 3 million rubles ($49,000) for information about the crime, several media outlets reported.
article_snippet: Putin quickly condemned the killing and ordered three law enforcement agencies to investigate the shooting, the Kremlin said in a statement.
article_snippet: Putin also wrote to Nemtsov's mother saying Putin shared Nemtsov's mother grief and promised to bring those behind the killing to justice, the Kremlin said.
article_snippet: But some of Nemtsov's fellow critics suspect involvement by either Putin's administration or a supporter of Putin.
article_snippet: I don't know who killed Boris, but I know that it's the government and personally Putin who are responsible for it.
article_snippet: it's the government and personally Putin who are responsible for it've been constantly promoting a hatred towards everyone who doesn't support it's the government and personally Putin who are responsible for it course and thinks different.
article_snippet: Putin had a different theory: that the killing was a contract hit, but one meant to fire up political strife, Putin's spokesman Dmitry Peskov said.
article_snippet: Russian spy Alexander Litvinenko accused state security services of organizing a coup to put Putin in power.
article_snippet: While Nemtsov certainly had Nemtsov share of enemies in Russia -- especially those who disagree with Nemtsov stance on the Ukrainian conflict --  many left notes for the slain politician on the bridge where Nemtsov was killed.
article_snippet: In a column on how Nemtsov had been harassed for Nemtsov regular criticism of the Kremlin, Human Rights Watch's Tanya Cooper lambasted Peskov, the Putin spokesman, for saying the killing appeared to be an attempt to destabilize Russia --
highlights_snippet: Russia: Authorities are searching for the killer of staunch Putin critic .
  