article_snippet: last night a law enforcement source emerged the head of Russia’s Investigative Committee, Alexander Bastrykin, who will lead inquiries into the murder, is a Vladimir Putin loyalist with a history of intimidating the Press.
article_snippet: Vladimir Putin once threatened to behead a journalist and investigate the killing himself.
article_snippet: Scroll down for video .
article_snippet: The 55-year-old was shot four times by an unknown killer.
article_snippet: But the Kremlin strongly denied any official responsibility for the killing.
article_snippet: ’s mother, promising to ‘do everything’ to ensure the perpetrators are ‘properly punished’.
highlights_snippet: Critics claim the 55-year-old was killed for publicly condemning President .