
People follow the coffin of Russian opposition leader Boris Nemtsov during a farewell ceremony in Moscow on Tuesday, March 3. Nemtsov, a vocal opponent of Russian President Vladimir Putin's, was gunned down hundreds of feet away from the Kremlin on Friday, February 27. The assassination has spawned a flood of conspiracy theories; many suspect the Kremlin of either direct or indirect involvement. Putin condemned the killing and ordered three law enforcement agencies to investigate, the Kremlin said.

Dina Eidman, the mother of Nemtsov, left, and other relatives pay their last respects in Moscow on March 3.

People pay tribute to Nemtsov on Monday, March 2, at the scene of the opposition leader's shooting in Moscow.

People march in memory of Nemtsov in Moscow on Sunday, March 1.

A woman carries a sign with Nemtsov's image during a march in St. Petersburg, Russia, on March 1.

A woman leaves flowers in Nemtsov's memory during a march in central Moscow on March 1.

People march near the Kremlin in Moscow on March 1.

Watched by police in boats on the Moskva River, crowds march across a bridge in Moscow on March 1.

People gather to honor Nemtsov during a ceremony at Maidan, or Independence, Square in Kiev, Ukraine, on March 1.

A woman places a candle at a makeshift memorial in front of the Russian Embassy in Vilnius, Lithuania, on March 1.

People gather at Innocent Plaza in Paris on March 1 to remember Nemtsov.

A man carries a sign with Nemtsov's image March 1 in Moscow.

Marchers gather in central Moscow on March 1.

People march near the Kremlin in Moscow on March 1.

People light candles at a monument dedicated to political prisoners in St. Petersburg on Saturday, February 28.

A group of European Union ambassadors to Russia lay flowers on February 28 at the site where Nemtsov was gunned down in Moscow.