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 saying "I'm sorry" as he went. The woman's description led police to identify the assailant as DeSalvo. When his photo was published, many women identified him as the man who had assaulted them. Earlier on October 27, DeSalvo had posed as a motorist with car trouble and attempted to enter a home in Bridgewater, Massachusetts. The owner of the home, future Brockton Police Chief Richard Sproles, became suspicious and ultimately fired a shotgun at DeSalvo. Under arrest for his role in the "Green Man" rapes, DeSalvo was not suspected of being involved with the murders. Only after he was charged