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
Albert DeSalvo was also badly beaten. Without any sign of forced entry into their dwellings, the women were assumed to have either known their killer or voluntarily allowed him into their homes. In the fall of 1964, in addition to the Strangler murders, the police were also trying to solve a series of rapes committed by a man who had been dubbed the "Measuring Man" or the "Green Man". On October 27, 1964, a stranger entered a young woman's home in East Cambridge posing as a detective. He tied his victim to her bed, proceeded to sexually assault her, and suddenly left,