Casey Sherman, front, nephew of homicide victim Mary Sullivan, appears emotional as he talks about his aunt while facing reporters during a news conference at Boston Police headquarters

 

              Casey Sherman, front, nephew of homicide victim Mary Sullivan, appears emotional as he talks about his aunt while facing reporters during a news conference at Boston Police headquarters
Casey Sherman, front, nephew of homicide victim Mary Sullivan, appears emotional as he talks about his aunt while facing reporters during a news conference at Boston Police headquarters, in Boston, Thursday, July 11, 2013. Investigators helped by advances in DNA technology finally have forensic evidence linking longtime suspect Albert DeSalvo to Sullivan, the last of the 1960s slayings attributed to the Boston Strangler. Boston Police Commissioner Ed Davis looks on behind. (AP Photo/Steven Senne)