Olga was murdered with her family on July 17, 1918 by the Bolshevik secret police. The Russian Orthodox Church canonized her as a passion bearer after her death. Later, many people falsely claimed to be surviving members of the royal family. A woman named Marga Boodts claimed to be Grand Duchess Olga, but she was not taken seriously. Historians believe that Olga was killed with her family at Ekaterinburg. Her remains were identified through DNA testing. They were buried in a funeral ceremony in 1998 at Peter and Paul Cathedral in St. Petersburg with those of her parents and two of her sisters.