>> reporter: russian officials don't ploobelieve any crime hasn committed. friends and colleagues say that's typical cover up. he thought he was in danger. the friend said borodin called him and said it was a false alarm. tonight borodin is dead having fallen from his fifth floor. friends and colleagues don't believe it was a suicide and human rights observers don't believe it was accidental. >> yet again, a russian journalist who is covering topics the kremlin doesn't want investigated has died.