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
Francisco Guerrero (serial killer) Francisco Guerrero (serial killer) Francisco Guerrero Pérez (1840–1910), also known as Antonio Prida, was a Mexican serial killer in the late 19th century. He was the first serial killer to be captured in Mexico, although he was not the country's first recorded serial killer. Guerrero killed approximately twenty female prostitutes in Mexico City between 1880 and 1888. He also killed one woman whose status as a prostitute has been inconsistently reported. Guerrero and Jack the Ripper were contemporaries and their modus operandi were similar—some authors compare the two men. He was also known as ""El Chalequero"", ""The Mexican Bluebeard"", ""The