Law Enforcement Criminal Investigation Fundamentals 5

Question 1

Probable cause for an arrest exists when:

Accepted Answer

Facts and circumstances would lead a reasonable person to believe a crime was committed by the suspect

Answer

Probable cause requires reasonable, fact-based belief that a crime occurred and the person committed it.

Question 2

Evidence obtained as a direct result of an illegal search is typically excluded under which doctrine?

Accepted Answer

Fruit of the poisonous tree

Answer

The fruit of the poisonous tree doctrine suppresses evidence derived from an unconstitutional search or seizure.

Question 3

An investigator may seize evidence without a warrant under the 'plain view' doctrine only if:

Accepted Answer

The officer is lawfully present and the incriminating nature is immediately apparent

Answer

Plain view seizure requires lawful presence and that the item's evidentiary nature be immediately obvious.

Question 4

What is the investigative value of a properly maintained 'case file' or murder book?

Accepted Answer

It centralizes all reports, evidence logs, and leads for continuity and review

Answer

The case file consolidates every document and lead, ensuring continuity, accountability, and effective review.

Question 5

A 'cold case' is most often advanced years later by:

Accepted Answer

Re-testing preserved evidence with newer DNA technology or new tips

Answer

Advances in DNA analysis and fresh tips frequently break cold cases when preserved evidence is re-examined.

Law Enforcement Practice Test