The bodies of Tsar Nicholas II , Tsarina Alexandra , and three of their daughters were buried in the St. Catherine Chapel at St. Peter and Paul Cathedral in St. Petersburg on 17 July 1998 . The bodies of Tsar Nicholas II , Tsarina Alexandra , and three of their daughters were finally interred in the St. Catherine Chapel at St. Peter and Paul Cathedral in St. Petersburg on July 17 , 1998 , eighty years after they were murdered .