Criminal Investigation chapter 7 review
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what are the paid informant guidelines
payment records documented
notification when informant commits a crime
prohibits officers from cutting deals of leniency
Special approval for minors, on parole or probation, drug addict, or felony convictions
what is the legal doctrine of the "informer privilege"
an informants identity should not be disclosed during the trial... unless...
1) a defendant can't be tried fairly without confrontation (necessary for a fair trial)
2) is cross examination of an informant necessary and material
Vocab: Human Sources of information
Most frequent source of information
not always reliable
what are the 3 types of "human sources of information"
1) Voluntary Informants
2) Informants with ulterior motives
3) Paid informants
Anyone who provides information without ulterior motive or payment
Motivation: Civic Responsibility, Fear, or general Suspicion
found either through personal cultivation, departmental reference, or unsolicited contact (anonymous tips)
Informants with Ulterior Motives
- Revenge, Reduction in sentence, early release, eliminate Competitors, guilt, wants attention
- Must be evaluated for credibility
Receives Monetary compensation (money)
Needs Corroboration; mandatory for anonymous tips
They are essential to police, and are usually involved or are close contacts with criminal activity
what are the special considerations involved with using informant informations as the basis for a search warrant
need to be Reliable, and Knowledgeable
And need00s to have Timely Information
A written statement made under oath or an attachment to a warrant wherein the police detail probable cause
Omnibus crime control act of 1968
Legalized electronic surveillance by officers with judicial review
The National Crime information Center (NCIC)
links thousands of police agencies together.
The Criminalistics Laboratory Information System (CLIS)
Collects, identifies, and stores forensic science data for law enforcement agencies.
The FBI laboratory
The Largest Forensic Laboratory in the world
The FBI identification Division
Receives and stores Fingerprint Cards from arrested suspects and other livescans
The Combined DNA index System (CODIS)
FBI's National DNA database for law=enforcement purposes
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