 The role of Voykov in the regicide was fully investigated by the commission set up after Admiral Kolchak's White Army captured Yekaterinburg from the Bolsheviks.In the materials of the investigator Sokolov Voykov was mentioned only as a person related to the distribution of sulfuric acid.After the fall of Yekaterinburg on July 25, 1918 the Ural Regional Soviet evacuated to Perm and Voykov continued his work there.