This case is the result of an initiative to test previously untested sexual assault kits in Delaware.[83] Giles Daniel Warrick Rape and murder of 28-year-old Christine Mirzayan; several other rapes as the "Potomac River Rapist" Washington, D.C., USA 1998-08-01 2019-11-13 Attacks of the "Potomac River Rapist" began May 6, 1991, and possibly ended when Mirzayan was murdered in 1998.