MSCTC Evidence Handling & Chain of Custody — Questions and Answers
Question 1: What is the primary purpose of maintaining chain of custody for evidence?
- To ensure evidence is stored in a climate-controlled environment
- To reduce the workload of evidence technicians
- To preserve the integrity and admissibility of evidence in court (Correct answer)
- To satisfy insurance requirements for seized property
Correct answer: To preserve the integrity and admissibility of evidence in court
Chain of custody ensures evidence integrity and admissibility by creating an unbroken documentary record of every person who handled the evidence.
Question 2: When should an officer begin documenting chain of custody?
- When the evidence arrives at the crime lab
- When the case is submitted to the prosecutor
- When the evidence is booked into the property room
- At the moment the evidence is first collected or seized (Correct answer)
Correct answer: At the moment the evidence is first collected or seized
Chain of custody documentation must begin at the exact moment evidence is first identified and collected to account for its condition and location from the start.
Question 3: What type of evidence requires the most careful handling due to contamination risk?
- Documentary evidence such as written records
- Physical weapons like firearms
- Biological and DNA evidence (Correct answer)
- Digital devices such as cell phones
Correct answer: Biological and DNA evidence
Biological and DNA evidence is highly susceptible to contamination, degradation, and cross-contamination, which can permanently destroy its evidentiary value.
Question 4: What information must be recorded when transferring evidence between officers?
- Only the date and case number
- The names of both parties, date, time, and reason for the transfer (Correct answer)
- Only the signature of the receiving officer
- The evidence description and storage location only
Correct answer: The names of both parties, date, time, and reason for the transfer
A complete chain of custody transfer requires identification of both the transferring and receiving officers, along with the date, time, and stated reason for the transfer.
Question 5: What is the proper way to package wet biological evidence for long-term storage?
- Seal it immediately in an airtight plastic bag to contain moisture
- Allow it to air dry, then package in paper or breathable material (Correct answer)
- Place it in a sealed glass container with a chemical preservative
- Wrap tightly in plastic wrap to prevent moisture loss
Correct answer: Allow it to air dry, then package in paper or breathable material
Wet biological evidence must be air-dried before packaging in paper because sealing it in plastic promotes mold and bacterial growth that destroys DNA.
Question 6: Under Michigan law, who is responsible for ensuring evidence retention periods are met?
- The state attorney general's office exclusively
- The individual officer who collected the evidence
- The evidence custodian under the direction of agency leadership (Correct answer)
- The court clerk assigned to the case
Correct answer: The evidence custodian under the direction of agency leadership
The agency's evidence custodian, under the supervision of department leadership, is responsible for tracking and ensuring compliance with all evidence retention requirements.
Question 7: What action should an officer take if they discover that stored evidence has been compromised or tampered with?
- Dispose of the compromised evidence and note the loss in the log
- Immediately notify the prosecutor and thoroughly document the compromise (Correct answer)
- Replace the evidence with a similar item to preserve the case
- Transfer the evidence to another location without further documentation
Correct answer: Immediately notify the prosecutor and thoroughly document the compromise
Compromised evidence must be immediately reported to the prosecutor and documented in full detail to maintain legal transparency and uphold the defendant's due process rights.
Question 8: What is the primary role of an evidence custodian in a Michigan law enforcement agency?
- To investigate crimes involving stolen or missing property
- To maintain secure storage, accurate records, and proper disposition of all agency evidence (Correct answer)
- To serve as the lead prosecutor for evidence-related criminal charges
- To transport evidence packages to and from court hearings
Correct answer: To maintain secure storage, accurate records, and proper disposition of all agency evidence
The evidence custodian is solely responsible for the secure storage, accurate record-keeping, and legally compliant final disposition of all evidence held by the agency.
Question 9: Under what limited circumstance may evidence be destroyed before a criminal case is fully adjudicated?
- When the property room needs space for a higher-priority case's evidence
- When the evidence is perishable and a court order or documented prosecutor approval has been obtained (Correct answer)
- When the evidence has remained in storage for more than one calendar year
- When the officer who originally collected the evidence authorizes its destruction
Correct answer: When the evidence is perishable and a court order or documented prosecutor approval has been obtained
Perishable evidence may be destroyed pre-adjudication only with court authorization or documented prosecutor approval, along with thorough photographic documentation and weight records.
Question 10: What special protocols apply to evidence collected in cases involving juvenile offenders in Michigan?
- Juvenile evidence is handled identically to evidence in adult criminal cases
- Evidence must be sealed and records restricted per Michigan's juvenile confidentiality statutes (Correct answer)
- All juvenile evidence is automatically destroyed 30 days after the case closes
- Only school district administrators may authorize the handling of juvenile evidence
Correct answer: Evidence must be sealed and records restricted per Michigan's juvenile confidentiality statutes
Michigan's juvenile justice laws impose strict confidentiality requirements on evidence and records from juvenile proceedings, limiting access beyond what applies to adult cases.
Question 11: What is 'presumptive testing' in the context of drug evidence collected in the field?
- A certified laboratory process that provides a definitive identification of a controlled substance
- A field test indicating the probable presence of a substance that still requires laboratory confirmation (Correct answer)
- A standardized method for accurately weighing bulk drug evidence before booking
- A background investigation into the suspect's prior drug-related offenses
Correct answer: A field test indicating the probable presence of a substance that still requires laboratory confirmation
Presumptive field tests indicate the probable presence of a controlled substance to support probable cause but are not definitive; confirmatory laboratory analysis is required for prosecution.
Question 12: How should an officer handle evidence that is also classified as contraband, such as an illegally possessed firearm?
- Immediately destroy the contraband after photographing it to prevent re-entry into circulation
- Process it through standard evidence procedures, noting its contraband status for proper post-case disposition (Correct answer)
- Turn it over to federal ATF authorities immediately without departmental documentation
- Hold it separately from the property room pending a judicial order for its release
Correct answer: Process it through standard evidence procedures, noting its contraband status for proper post-case disposition
All contraband, including illegal firearms, must be processed through standard evidence procedures with its contraband designation noted so that proper forfeiture or destruction can occur after case resolution.
Question 13: What is the significance of the U.S. Supreme Court's Brady v. Maryland decision for evidence handling by Michigan law enforcement?
- Brady requires all evidence photographs to be taken in color rather than black and white
- Brady requires law enforcement to disclose all exculpatory evidence to the prosecution for mandatory sharing with the defense (Correct answer)
- Brady obligations apply exclusively to federal criminal investigations and prosecutions
- Brady disclosure obligations expire automatically upon a defendant's conviction
Correct answer: Brady requires law enforcement to disclose all exculpatory evidence to the prosecution for mandatory sharing with the defense
Under Brady v. Maryland, prosecutors and by extension law enforcement must identify and disclose any evidence favorable to the defense, making thorough documentation essential.
Question 14: What is the correct procedure when an officer needs to add newly discovered items to an already-submitted evidence package?
- Add the items to the existing package without additional paperwork since the case number is already logged
- Create a new evidence submission with its own documentation, cross-referencing the original package number (Correct answer)
- Open the original sealed evidence package and add the new items inside
- Store the new items separately under a different case number to avoid confusion
Correct answer: Create a new evidence submission with its own documentation, cross-referencing the original package number
New items must be submitted as a separate evidence package with their own documentation and cross-referenced to the original case to maintain a clear and unbroken chain of custody.
