Moscow  (CNN)Russian opposition leader Boris Nemtsov was shot and killed Friday night in central Moscow, the Investigative Committee of the Russian Federation said in a statement Saturday, prompting immediate speculation from fellow opposition figures that the killing was targeted. A deputy prime minister in the late 1990s under President Boris Yeltsin, Nemtsov had been one of current President Vladimir Putin's most vocal critics. Putin quickly condemned the killing of Nemtsov and expressed his condolences to his family, the Kremlin said. Putin also ordered three law enforcement agencies to put together a task force to investigate the shooting, Russian news agency Itar-Tass reported.
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A mourning march will be held Sunday in place of a planned opposition rally, Russian media reports
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Opposition leader was shot while walking on bridge near Kremlin, authorities say
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Boris Nemtsov criticized elections, Olympics, Putin, Kremlin's Ukraine policies
He had most recently been critical of the Kremlin's handling of the @placeholder crisis.
"In @placeholder's atmosphere of hatred & violence, abroad & in Russia, bloodshed is the prerequisite to show loyalty, that you are on the team," he added.