This reference guide provides deputies with on-duty legal standards used during detentions, searches, arrests, questioning, and use of force. It supplements San Andreas statutes and LSCSO SOPs and is intended for quick field reference and report articulation.

LEGAL STANDARD QUICK LOOKUP

• Pedestrian Stop → Reasonable Suspicion
• Traffic Stop → Reasonable Suspicion
• Arrest → Probable Cause
• Search of Person → Probable Cause or Search Incident to Arrest
• Vehicle Search → Probable Cause / Consent / Inventory
• Custodial Questioning → Miranda Required
• Emergency Entry → Exigent Circumstances
• Evidence Seizure → Plain View Doctrine

REASONABLE SUSPICION (RS)
Specific, articulable facts indicating criminal activity may be occurring, has occurred, or is about to occur.

Authorizes: Temporary detention, limited questioning, frisk if safety concern exists
Does NOT authorize: Arrest, full search, prolonged detention
Articulation: Clearly state observations and why they were suspicious

PROBABLE CAUSE (PC)
Facts that would lead a reasonable person to believe a crime was committed and the subject committed it.

Authorizes: Arrests, searches, seizures, warrant requests
Note: PC is a higher standard than RS and must be court-defensible
Articulation: Document facts in clear chronological order

DETENTION VS ARREST
Detention: Temporary, investigative, RS required
Arrest: Custodial, freedom restricted, PC required
Reminder: Clearly articulate when RS escalated to PC

SEARCH INCIDENT TO ARREST
A lawful arrest allows a search of the arrested person and the area within immediate reach.

Purpose: Officer safety and evidence preservation
Limitation: Arrest must be lawful or search becomes invalid

VEHICLE SEARCHES
Vehicles have reduced expectation of privacy.

Lawful bases include:
• Probable Cause (entire vehicle and containers)
• Consent (voluntary and revocable)
• Inventory (after lawful impound, SOP driven)

Always document the legal basis used.

CONSENT SEARCHES
Consent must be voluntary and may be revoked at any time.

Best practice:
• Clarify scope verbally
• Stop immediately if consent is withdrawn
• Document exact consent language

PLAIN VIEW DOCTRINE
Evidence may be seized without a warrant if:

Deputy is lawfully present

Item is in plain sight

Illegality is immediately apparent

Does not allow manipulation to create visibility.

MIRANDA RIGHTS
Required ONLY when subject is both in custody AND being interrogated.

Notes:
• Spontaneous statements are admissible
• Questioning must stop if rights are invoked
• Miranda affects admissibility, not arrest authority

EXIGENT CIRCUMSTANCES
Allows immediate warrantless action due to urgent necessity.

Examples:
• Immediate threat to life
• Hot pursuit
• Imminent evidence destruction

Authority ends when exigency ends. Supervisor notification recommended.

USE OF FORCE – OBJECTIVE REASONABLENESS
Force is evaluated based on what a reasonable officer perceived at the moment.

Consider:
• Severity of the crime
• Immediate threat
• Resistance or flight

Not judged by hindsight. Clear articulation is required.

EXCLUSIONARY RULE
Unlawful actions may result in suppressed evidence or dismissed charges.

Operational reminder: If it’s not lawful, it won’t hold up in court.

FIELD CHECK BEFORE ACTION
• What legal standard applies?
• What facts justify it?
• What authority does it give me?
• Have I exceeded that authority?

If unsure: slow down, articulate, consult supervision.

INTERNAL USE NOTICE
For LSCSO operational reference only. This guide does not replace formal training, judicial rulings, or LSCSO SOPs.