Before the revolution the Tsar wielded absolute power in Russia, at least in theory. His life and that of his family was one of gilded luxury. After his abdication the imperial family were held in conditions of genteel house arrest, continuing to enjoy privileges undreamt of by their former subjects. However the Tsar remained deeply unpopular with the revolutionary public and there were fears for his life if he remained in Russia. During his premiership, Kerensky tried unsuccessfully to arrange for the Tsar to go abroad into exile. However a tentative offer of asylum in Britain was withdrawn following objections by King George V, who feared that his cousin’s arrival would ignite revolutionary sentiment. Other countries declined to take the Tsar for their own reasons.
To protect them from the Petrograd workers, Kerensky moved the imperial family to Tobolsk in Siberia, where they continued to live in comfortable conditions. However, since the October Revolution the situation of the imperial family has deteriorated. They have been denied luxuries and put on more basic rations. Their guards have become more surly. There is increased talk of putting the Tsar on trial.
In truth, the Bolsheviks are not sure what to do with the Tsar. Trotsky favours a show trial in Moscow, with himself as the prosecutor; others are not so sure. In the meantime the Tsar and Tsarina are transferred to a new place of incarceration in Ekaterinburg. They arrive today and are greeted by an angry mob before being taken to the House of Special Designation, the commandeered home of a local businessman. Their son and daughters will join them later.
Tsar Nicholas II in the early stages of his captivity (Encyclopaedia Britannica)
The House of Special Designation (Wikipedia)