LD 225 - Basic Investigative Strategies

Introduction to Investigation

  • The importance of investigations in law enforcement.

  • Definition of a crime report as a starting point for investigations.

  • The simplicity of the core message: every report signifies an active investigation.

Understanding Investigations

  • Definition of Investigation: A systematic inquiry aimed at establishing the facts of a matter related to crime.

  • Key components: Identifying responsible parties, gathering evidence, and determining timelines.

  • Example Timeline: Investigative processes can be initiated in as little as five minutes after a report.

Role of Police Officers in Investigations

  • Officers must maintain public trust while conducting investigations.

    • Public Trust: Essential for effective law enforcement; lack of trust damages police-image.

  • Consequences of Damaged Trust:

    • Negative public perception of law enforcement (e.g., “bad image”).

    • Reduced cooperation from the community in providing information or assistance in investigations.

Critical Aspects of Conducting Investigations

Understanding Rights

  • Officers must be aware of the rights guaranteed to individuals under the Constitution:

    • 1st Amendment: Freedom of speech, religion, and assembly.

    • 2nd Amendment: The right to keep and bear arms.

    • 3rd Amendment: Protection from quartering of troops.

    • 4th Amendment: Protection against unreasonable searches and seizures.

    • 5th Amendment: Right against self-incrimination; right to due process.

  • Professional Conduct: Ensure rights are not violated during investigations.

  • Importance of adhering to the Miranda Rights during interrogations.

Evidence Protection and Due Process

  • Importance of Due Process: Following legal procedures ensures fair treatment under the law.

  • Ensuring the integrity of evidence collected.

  • Connection between police investigations, the justice system, and probationary processes.

Fact-Finding in Investigations

  • Objectivity in Fact-Finding: Officers should maintain an open mind; avoid leading opinions.

    • Consequences of Closed-Mindedness: Incorrect conclusions can jeopardize investigations.

  • Subjective vs. Objective Fact-Finding:

    • Objective: Gathering facts without prejudice or bias.

    • Subjective: Allowing personal biases to influence the investigative process can lead to false assumptions.

Initial Response to Crime Scenes

  • First Response Steps:

    • Ensure safe arrival at the scene.

    • Render aid if needed; prioritize the well-being of victims.

    • Importance of identifying and securing the crime scene to protect evidence.

  • Case study scenario: Arriving at a missing person’s report and the necessary steps to establish calm and control.

    • Importance of maintaining command presence during stressful situations.

    • Reassuring victims that the police are there to help.

Identifying Key Individuals in Investigations

  • Key Roles:

    • Witnesses: Individuals who were present during the event.

    • Victims: Those directly impacted by the crime.

    • Suspects: Individuals believed to be involved in the crime.

  • Why establish witness and suspect presence? To prevent tampering with evidence and to manage the narrative that supports the investigation.

Command Presence

  • Definition: The officer’s ability to project confidence and authority to reassure victims and bystanders.

  • Importance of establishing command presence to ease the concerns of the public during a crisis.

Evidence Management

  • Protecting Fragile Evidence: Essential to preserve integrity for later analysis.

    • Risks of contamination include environmental factors (e.g., weather, other people at the scene).

  • Personal Anecdote: Story about marking evidence with crayons at a crime scene illustrates the importance of proper evidence marking.

    • Learning from mistakes and adapting investigative techniques based on situational needs.

A Preliminary Investigation - This stage focuses on assessing the scene, identifying initial evidence, and determining the overall approach required for the investigation.

Evidence Handling - This involves not only the careful collection and transportation of evidence to prevent contamination but also documenting the chain of custody to ensure its integrity in court.

  • Identify, Preserve, Collect evidence

  • Maintain Chain of Custody

  • Proper packaging and labeling

Witness and Suspect interviews - Conduct thorough interviews to gather detailed information, utilizing open-ended and direct questions to obtain a comprehensive understanding of the events.

  • Separate Witnesses

  • Miranda when required

  • Use open-ended questions

  • Document accurately

Follow-Up Investigation - Conduct thorough interviews with witnesses to gather additional information and clarify any discrepancies.

  • Review reports/evidence

  • Additional interviews

  • Serve warrants as needed

  • Coordinate with detectives/DA

Case Documentation & Reporting - Ensure all evidence and statements are recorded accurately in a timely manner to maintain the integrity of the investigation.

  • Clear and factual reports

  • Prep for court testimony

  • Organize evidence chronologically

  • Ensure Accuracy

SCENARIO: Security reports there is a fight in parking lot of business. One man has visible injuries, other man (Intoxicated) claims self defense. What are your steps?

  1. Secure the Scene: Ensure the area is safe for investigation and that no further incidents can occur.

  2. Assess the Scene: Determine the number of individuals involved and their conditions; prioritize attending to the injured person.

  3. Gather Witness Statements: Interview witnesses separately to get their accounts of the events; avoid leading questions to maintain the accuracy of their testimonies.

  4. Document the Injuries: Take photographs of the visible injuries on the man and any surrounding evidence, as well as the environment where the fight took place.

  5. Collect Security Footage: Request any available video recordings from security that may capture the altercation.

  6. Identify Participants: Document identities of both men involved, including any information on previous incidents if applicable.

  7. Analyze Evidence: Review collected evidence, considering the intoxication level of one participant and evaluating statements made.

  8. Report Findings: Prepare a detailed report summarizing all findings, adhering to protocol for presenting evidence in court. Conduct Follow-Up Interviews: Reach out to witnesses who may have observed the altercation or interactions leading up to it, ensuring to gather their accounts for additional context and corroboration.