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Criminal Profiling of Andrei Chikatilo
Transcript of Criminal Profiling of Andrei Chikatilo
Victims would be brutally raped and killed, then stabbed repeatedly especially around the face
Many had their eyes gouged out and tongues bitten off; others disemboweled
Fantasies became more violent with each victim Used local commuter trains to target his victims and then lured them into the nearby forest Likely to have had a difficult childhood If he was married, it was a strained marriage; his wife would let him keep to his own hours and did not much ask of him During the investigation, bodily fluids (semen and sweat) had been recovered from the crime scene of Markov’s (Victim #17, 27 December 1983). It had type AB antigens. Chikatilo had been under suspicion and arrested for behaving oddly at a bus station. His blood type, however, did not match the suspect profile.
What was not realized at the time was that Chikatilo’s actual blood type, type A, was different than his other bodily fluids (type AB). He was a member of a minority group known as “non-secretors”, whose blood type cannot be inferred by anything other than a blood sample. As police only had a sample of semen, and not blood, Chikatilo was able to escape suspicion of murder. Today’s sophisticated DNA techniques are not subject to the same fallibility.
On 21 November 1990, investigators were able to obtain a sample of Chikatilo's semen to test his blood type; the results confirmed that Chikatilo's semen was type AB, whereas his blood and saliva were type A. Forensics used to help with catching and convicting Chikatilo February 16, 1994 Chikatilo received the death sentence and was executed by a single gunshot behind the right ear. "I am a mistake of nature, a mad beast."