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
Sergei Martynov (serial killer) Martynov acted "daringly and cynically", leaving letters at crime scenes and making no effort to conceal evidence. He later claimed his killing were motivated by his wish for a "cleaning of the society". During his time in jail, when he was waiting for trial, Martynov asked to have another inmate in his cell so he could kill him "because he was bored". Martynov was convicted for eight murders and sentenced to life imprisonment. Sergei Martynov (serial killer) Sergei Kashfulgayanovich Martynov (; born 2 June 1962) is a Russian serial killer, convicted for the killing of 8 people across western and