Her Imperial Highness Grand Duchess Anastasia of Russia (Anastasia Nikolaevna Romanova) was the youngest daughter of Tsar Nicholas II of Russia, the last sovereign of Imperial Russia, and his wife Alexandra Fyodorovna. Anastasia was a younger sister of Grand Duchess Olga, Grand Duchess Tatiana and Grand Duchess Maria, and was an elder sister of Alexei Nikolaievitch, Tsarevitch of Russia. She was murdered with her family on July 17, 1918, by forces of the Bolshevik secret police. Rumors persisted of her possible escape since 1918, fueled by reports that two sets of remains, identified as Alexei Nikolaevich, Tsarevich of Russia, and either Anastasia or her elder sister Maria, were missing from a mass grave found near Ekaterinburg and later identified through DNA testing as the Romanovs. This has since been totally disproven. In January 2008 Russian scientists announced that the charred remains of a young boy and a young woman found near Ekaterinburg in August 2007 are most likely those of the thirteen-year-old Tsarevich and one of the four Romanov grand duchesses. Russian forensic scientists confirmed on April 30, 2008 that the remains were those of the Tsarevich Alexei and one of his four sisters. DNA information, made public in July 2008, that has been obtained from Ekaterinburg and repeatedly tested independently by laboratories such as the University of Massachusetts Medical School, USA, reveals that the final two missing Romanov remains are indeed authentic and that the entire Romanov family housed in the Ipatiev House, Ekaterinburg were executed in the early hours of 17 July 1918.