CRI听力:Russia's Investigative Committee Reaches Non-disclosure Deal with Nemtsov's Girlfriend

Russian investigators say slain politician Boris Nemtsov's girlfriend is offering full cooperation into the murder of the Russian opposition activist.

Nemstov's girlfriend Anna Duritskaya was with him when he was gunned down a bridge near Red Square last week.

She has since returned to her native Ukraine.

Russian authorities say Duritskaya has promised to continue to cooperate with investigators.

Vladimir Markin is a spokesperson for the committee investigating Nemtsov's murder.

"Investigators did not receive any complaints either from Duritskaya or from her lawyers at any time during her stay in Moscow. And only today, after the necessary elements of the investigation requiring Duritskaya's presence were completed, she left Russia. Also, apart from the protocols of her questioning she also signed a document about non-disclosure of any information regarding the preliminary investigation."

55-year old Nemtsov, a vocal critic of Russian President Vladimir Putin, was gunned down last week just hours before he was set to lead a demonstration against the Russian government.

The Kremlin has formed a task force to investigate his murder.