After the Bolshevik revolution in October 1917, Russia quickly disintegrated into civil war. Negotiations for the release of the Romanovs between their Bolshevik (commonly referred to as 'Reds') captors and their extended family, many of whom were prominent members of the royal houses of Europe, stalled. As the Whites (anti-Bolshevik forces, although not necessarily supportive of the Tsar) advanced toward Yekaterinburg, the Reds were in a precarious situation. The Reds knew Yekaterinburg would fall to the better manned and equipped White Army. When the Whites reached Yekaterinburg, the imperial family had simply disappeared. The most widely accepted account was that the family had been murdered. This was due to an investigation by White Army investigator Nicholas Sokolov, who came to the conclusion based on items that had belonged to the family being found thrown down a mine shaft at Ganina Yama.