KIEV (AFP) - The Ukrainian girlfriend of murdered Russian opposition activist Boris Nemtsov, who was with him when he was shot dead outside the Kremlin, has told police she has received death threats, Ukrainian prosecutors said on Friday.

"Anna Duritskaya... filed a statement about the threat to her life from unidentified people during her time in her parents' home" where she has stayed since Monday, when she returned to Kiev from Moscow, said a statement from the prosecutor-general.

The authorities have ordered that measures be taken "to protect her life and health".