Residents lay flowers to the Yaroslavl Duma, workplace of the Russian politician Boris Nemtsov, who was shot dead on the night of February 27, 2015, on Moscow's Bolshoi Moskvoretsky Bridge.

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People lay flowers at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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Citizens lay flowers at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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Citizens lay flowers at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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Journalist, human rights activist Olga Romanova, right, lays flowers at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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Member of the Russian State Duma Committee on Constitutional Legislation and State Construction Dmitry Gudkov, right, lays flowers at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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Leader of the Yabloko political party Grigory yavlinsky, right, lays flowers at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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Flowers and candles at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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Flowers and a picture at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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Pictures and flowers at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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Citizens lay flowers at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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Yabloko political party Chairman Sergei Mitrokhin at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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Flowers and candles by the office of the Republican Party of Russia – People's Freedom Party (RPR-PARNAS) on Pyatnitskaya street after a murder of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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Flowers and candles by the office of the Republican Party of Russia – People's Freedom Party (RPR-PARNAS) on Pyatnitskaya street after a murder of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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Citizens lay flowers at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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Flowers and candles by the office of the Republican Party of Russia – People's Freedom Party (RPR-PARNAS) on Pyatnitskaya street after a murder of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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People lay flowers and candles by the office of the Republican Party of Russia – People's Freedom Party (RPR-PARNAS) on Pyatnitskaya street after a murder of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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A female lays flowers at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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Flowers and candles by the office of the Republican Party of Russia – People's Freedom Party (RPR-PARNAS) on Pyatnitskaya street after a murder of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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People lay flowers at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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Citizens lay flowers at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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Citizens lay flowers at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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Oppositionist Ilya Yashin, right, lays flowers at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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Political and public activist Irina Khakamada, center, lays flowers at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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Political and public activist Irina Khakamada at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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A woman lays flowers at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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A woman at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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A man lays flowers at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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Rosnano CEO Anatoly Chubais lays flowers at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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People lay flowers at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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People lay flowers at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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People lay flowers at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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People lay flowers at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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People lay flowers at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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Kirov Region Governor Nikita Belykh, center, at a murder scene of politician Boris Nemtsov, who was shot dead on Moscow's Moskvoretsky bridge in the early hours of February 28, 2015.

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