Putin: "The deadly attack was carried out by Islamist militants - the question is who benefited from it?" - Walla! News. "We do know in whose hands the crime against Russia and its citizens was committed, but what interests us is who ordered it," Putin said in a meeting he conducted in the Kremlin.

The Kremlin addressed earlier today the allegations of the serious failure that allowed the unusual attack. "The investigation is underway," Kremlin spokesman Dmitry Peskov said when asked about the omission.