Forensic Files: Cop Out
Today’s lecture is 22 minutes long. This is a really interesting one. It’s about a gay cop who killed his lover. The time was 2004.
Cops in general do not make good killers, despite their forensic knowledge. Almost like they want to get caught.
Did the killer know the victim? Yes.
TTD? 12 hours.
CS- Crime Scene
MICES – why murder – money ideology conscience ego sex
“Coward” – when used by an LEO, means someone impossible to….…. catch and track
unsup – unknown suspect
ME – Medical Examiner
vic – victim
POI – person of interest
“Make a square” – take 2 right turns
CI – confidential informant
Types of Fingerprints: latent/visible/plastic
PC – probable cause
Common evidence: fingerprints, DNA, fibers, soil, blood, tire treads, hair, tool marks, glass, ballistics,
UCR Crimes: homicide, assault, robbery, burglary, larceny, GTA, arson, rape
Important properties of glass: density = mass/volume, refractive index = speed light vacuum/speed light medium
University of Missouri was a nearby school. The area only saw 80-90 murders in the last 25 years. These events occured in June 2004.
A body was found between two apartments. There was a knife wound on the throat. There was alot of blood there. The body was wearing only shorts.
Jesse Valencia was a prelaw student. He worked as a clerk at a hotel. No sign of foul play or struggle. No defensive wounds. Used condoms were found in his apartment.
*Once the vic is IDed, you always start with victimology.***
They looked up Jesse’s cell phone records. They find some guy, who Jesse was screwing. Jess was gay.
Steven Rios was a 3 year veteran. He had a family. Rios cooked up an alibi. Said he was in bed with his wife at the time of the crime. The police needed more.
The PPCT shoulder pin restraint system. It’s a headlock with the right arm and head together. Right arm through, Hold right arms with left hand. Jesse had marks consistant with the PPCT used incorrectly.
I got a good look at the police training file:
“Name of Student Steven Arthur Rios
Constitutional Law 89
Human Behavior 86.67
Crimianl Investigation A 75
Missouri Statuatory Law 70
Handgun Score 84
Shotgun Score 78
PPCT Defenstive Tactics Not Certified (below 80% is fail)
Oleoresin Capsicum Aerosol Training (OCAT) Not Certified
Improved Field Sobriety Testing Not Cerfified
Ranked 46 of 51 students”
When hair contains the root, it has DNA evidence. The cops found 3 hairs from the chokehold wounds. They did PCR and matched it to Rios.
Rios and the vic met during a loud party. Rios cited the vic and detectives found out by checking the records.
Rios was convicted to 1st degree murder and got life in prison.
Jeff Nichols – Homicide Detective