A 16-year-old boy has been charged with sexually assaulting and murdering his 18-year-old stepsister, Anna Kepner, whose body was found hidden on a Carnival Cruise ship, authorities said Monday.
According to the U.S. Justice Department, the teen, identified by the government as T.H., was initially charged as a juvenile on February 2, but the case was sealed until U.S. District Judge Beth Bloom ordered that he would be prosecuted as an adult, the department said.