DNA tests confirm that the man who once claimed to be the Boston Strangler did in fact kill the woman believed to be his last victim and was likely responsible for the deaths of the other victims, authorities said.
Albert DeSalvo admitted to killing Mary Sullivan and 10 other female victims in the Boston area between 1962 and 1964, but he later recanted his story.
The DNA finding “leaves no doubt that Albert DeSalvo was responsible for the brutal murder of Mary Sullivan” and it was “most likely” that he also was the Boston Strangler, Massachusetts Attorney General Martha Coakley said.
Boston investigators unearthed DeSalvo’s remains last week so they could test DNA from the scene of Sullivan’s death and get a match with DeSalvo, that excluded 99.9 percent of suspects.
Mary Sullivan was 19 years old in 1964 when she was brutally raped and killed in her Boston bedroom. The only link to her killer was DeSalvo’s confession, which was subject of scrutiny since there was never any concrete evidence collected at the scene.
Advances in DNA testing have provided authorities with a “familial match” from evidence collected from the crime scene and DeSalvo.
Boston police located a water bottle used by a nephew of DeSalvo and found a match in the Y chromosome, which eliminates 99.9 percent of the population to the crime. Sullivan is the only victim for which DNA evidence is available.
Authorities in the 1960s had the foresight to set aside evidence extracted from Sullivan’s body and a blanket and placed it in a laboratory until science could be employed to link a suspect.
After a few earlier attempts, the DNA evidence was submitted to two independent labs last fall and a profile was developed. The evidence in the case has never changed, only the technology for law enforcement to explore it.
An attorney for DeSalvo’s family has said even a perfect match wouldn’t determine he killed Sullivan.
DeSalvo, married with children, a blue-collar worker and Army veteran, confessed to the 11 Boston Strangler murders, as well as two others.
Represented by F. Lee Bailey, DeSalvo was never convicted of the Boston Strangler killings. Rather, he was sentenced to life in prison for a series of armed robberies and sexual assaults and was stabbed to death in the state’s maximum security prison in Walpole in 1973 — but not before he recanted his confession.
Officials stressed that the DNA evidence links DeSalvo only to Sullivan’s killing and that no DNA evidence is believed to exist for the other Boston Strangler slayings.
State Attorney General Martha Coakley, however, said investigators hoped that solving Sullivan’s case might put to rest doubts about DeSalvo’s guilt.
Though the murders were attributed to DeSalvo after he confessed, investigators believed the murders were committed by more than one person.
The infamous Boston Strangler stalked the city in the early 1960s, killing a total of 13 women over two years, the report said. The victims were all single women between the ages of 19 to 85. All were sexually assaulted, then strangled in their
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