article_snippet: Scroll down for video .
article_snippet: Authorities have not made any arrests.
article_snippet: Nemtsov's mother Dina Eidman, Nemtsov secretary Inna Krolyova and daughter Dina (from left to right) pay Nemtsov's mother Dina Eidman, his secretary Inna Krolyova and daughter Dina
article_snippet: The politician's mother Dina, 87, and