Section 3.2: Field Interviews & Terry Stops

Section 3.2: Field Interviews & Terry Stops

Understanding the Levels of Police-Citizen Contact

Constitutional policing requires peace officers to understand the distinct legal boundaries governing police-citizen interactions. The Fourth Amendment of the United States Constitution and Article I, Section 10 of the Minnesota Constitution protect citizens against unreasonable searches and seizures. In practice, police encounters are divided into three levels, each requiring a specific legal justification:

1. Consensual Encounters: These involve no seizure or detention. An officer may approach a citizen in a public space, ask questions, request to see identification, or seek consent to search, provided the officer does not convey a message that compliance is mandatory. The citizen is free to ignore the officer, refuse to answer, and walk away. No level of suspicion is required to initiate a consensual encounter.
2. Investigative Detentions (Terry Stops): This is a temporary seizure. A peace officer may briefly detain a person for investigative purposes if the officer possesses Reasonable Articulable Suspicion (RAS) that criminal activity is occurring, has occurred, or is about to occur.
3. Arrests: This is a full custodial seizure. Taking a person into custody to answer for a criminal charge requires Probable Cause (PC). Probable cause exists when the facts and circumstances within an officer's knowledge would lead a person of reasonable caution to believe that a crime has been committed and the suspect committed it.

Reasonable Articulable Suspicion (RAS) Standard

Established by the United States Supreme Court in Terry v. Ohio (1968), the RAS standard allows peace officers to temporarily seize a person to investigate potential criminal activity.

Core Components of RAS

Reasonable articulable suspicion is a lower standard of proof than probable cause, but it must be based on objective, observable facts. An officer cannot initiate a Terry stop based on a hunch, gut feeling, or general suspicion. Instead, the officer must be able to articulate specific facts in court that, when combined with rational inferences, suggest criminal activity is afoot. Courts evaluate the validity of a Terry stop using the totality of the circumstances standard. Contributing factors may include:

• Fleeing or evasive behavior upon noticing law enforcement.
• Presence in a high-crime area or near the scene of a recently reported crime.
• Match with a suspect description in a police broadcast.
• Unusual behavior, such as casing a business or hiding objects from view.
• The officer's specialized training and experience (e.g., recognizing hand-to-hand narcotic transactions).

Minnesota-Specific Limits: Scope and Expansion of Stops

Minnesota courts afford citizens greater protection under the state constitution than is required under the federal constitution.

• State v. Askerooth (2004): The Minnesota Supreme Court ruled that the scope and duration of an investigative stop must be strictly limited to the initial justification for the stop. An officer cannot expand the scope of a stop to investigate unrelated matters unless the officer develops independent, reasonable articulable suspicion of that other crime. For example, during a routine traffic stop for a broken taillight, an officer cannot transition into a drug investigation or order the driver into a squad car unless independent RAS of drug activity or safety concerns is established.
• State v. Fort (2003): The court held that officers cannot conduct a consent search or ask questions unrelated to the purpose of the traffic stop (such as asking about drugs or weapons) without independent RAS.

The Terry Frisk (Pat-Down) for Weapons

A Terry stop does not automatically authorize a search or a pat-down of the suspect. A frisk is a separate intrusion that requires its own legal justification.

The Standard for a Frisk

To perform a protective pat-down (frisk) of a detained individual, a peace officer must have reasonable articulable suspicion that the suspect is armed and dangerous.

• Limited Purpose: The sole purpose of a frisk is officer safety. It is not a search for evidence, contraband, or drugs.
• Limited Scope: The frisk is strictly limited to a pat-down of the suspect's outer clothing to detect weapons that could be used to assault the officer (such as firearms, knives, or brass knuckles). If the officer feels a hard object that could reasonably be a weapon, they may reach inside the clothing to retrieve it.

The Plain Feel Doctrine: Minnesota v. Dickerson (1993)

The limits of a protective frisk were defined by the U.S. Supreme Court in Minnesota v. Dickerson, a landmark case originating in Minneapolis. Under the Plain Feel Doctrine, an officer may seize non-weapon contraband detected during a lawful frisk under strict conditions:

1. The officer must be conducting a lawful pat-down for weapons based on the belief that the suspect is armed and dangerous.
2. The identity of the contraband must be immediately apparent to the officer's touch.
3. The officer cannot manipulate, squeeze, or slide the object to determine its identity.

In Dickerson, the officer felt a small lump in the suspect's pocket and, after squeezing and manipulating it, determined it was crack cocaine. The Supreme Court ruled the seizure unconstitutional because the officer's manipulation of the item exceeded the scope of a protective safety search, transforming the frisk into an unauthorized search for evidence.

Field Interviews vs. Arrests

Officers must distinguish between the limited scope of a Field Interview (FI) and a custodial arrest:

• The Seizure Test: To determine if a consensual encounter has become a seizure, courts ask whether, in view of all the circumstances, a reasonable person would believe they were not free to leave. Officers must avoid actions that project mandatory authority (such as blocking paths, displaying weapons, using emergency lights, or using a commanding tone) unless they have the RAS required for a stop.
• Search Incident to Arrest: If an officer has probable cause to arrest a suspect, they may conduct a search incident to arrest. Unlike a Terry frisk, this is a full search of the suspect's person and their immediate control area to locate evidence, weapons, or contraband, and requires no independent safety suspicion.