article_snippet: Duritskaya -- the only known witness to the shooting -- left Moscow for Kiev late on Monday.
article_snippet: Duritskaya -- the only known witness to the shooting -- had been staying at the apartment of an aide to "Nemtsov under constant police guard.
article_snippet: Duritskaya -- the only known witness to the shooting -- mother, Inna Duritskaya, told CNN on Monday that Duritskaya -- the only known witness to the shooting -- faces constant psychological pressure from Moscow authorities and fears Duritskaya -- the only known witness to the shooting -- will be implicated in his death.
article_snippet: The Moscow Investigative Committee said Duritskaya -- the only known witness to the shooting -- was not detained while in Moscow and that Duritskaya -- the only known witness to the shooting -- was offered witness protection, which Duritskaya -- the only known witness to the shooting -- turned down.
article_snippet: Duritskaya -- the only known witness to the shooting -- was free to leave at any point but wanted to give Duritskaya -- the only known witness to the shooting -- testimony and contribute to the investigation process, "understanding the important of the investigation process for the investigation," the statement said.
article_snippet: It is needless to state how important Duritskaya -- the only known witness to the shooting -- testimony is.