Albert DeSalvo F. Conley said he expected investigators to find an exact match when the evidence is compared with his DNA. On July 19, 2013, Suffolk County DA Daniel F. Conley, Mass. Attorney General Martha Coakley and Boston Police Commissioner Edward F. Davis announced that DNA test results proved DeSalvo was the source of seminal fluid recovered at the scene of Sullivan's 1964 murder. Though DeSalvo was conclusively linked to Mary Sullivan's murder, doubts remain as to whether he committed all of the Boston Strangler homicides — and whether another killer could still be at large. When he confessed, people who knew
Serial killer the course of the last century." According to "The Journal of Forensic Psychiatry & Psychology", there is evidence that 16% of all serial killers are women. Kelleher and Kelleher (1998) created several categories to describe female serial killers. They used the classifications of "", "angel of death", "sexual predator", "revenge", "profit or crime", "team killer", "question of sanity", "unexplained", and "unsolved". In using these categories, they observed that most women fell into the categories of black widow or team killer. Although motivations for female serial killers can include attention seeking, addiction, or the result of psychopathological behavioral factors, female serial