Two men, Anzor Gubashev and Zaur Dadayev, have been charged over the murder of Russian opposition figure Boris Nemtsov 

A judge said Dadayev had admitted to being involved in the killing.

Russian state investigators now say they have a total of five suspects in Nemtsov's murder.

One served in a police unit in the Russian region of Chechnya.

55-year-old Nemtsov, a former deputy prime minister, was shot dead near the Kremlin on February 27.

Russian officials have always denied involvement, despite accusations from some of Nemtsov's friends.

It's the most high-profile killing of an opposition figure in President Vladimir Putin's fifteen year reign.

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