Burglary Scene and the Phone on the Lawn
At 08:15, Officer Nguyen responds to a residential burglary. The homeowner left at 07:30 and returned to find a rear window broken, a jewelry box empty, and a smartphone on the wet lawn beneath the window. No suspect is on scene. A neighbor says she saw a man in a gray hoodie leave at about 07:50 in a blue sedan. The homeowner gives consent to check the house; no one is inside. Nguyen sees a latent print on the window frame and a shoe impression in the mud. The phone is powered on and vibrating with notifications. At 09:10, another officer stops a man two miles away who matches the description; he has a screwdriver in his waistband and a gold ring in his front pocket. The phone's lock screen shows a message preview that may identify the owner. Nguyen must decide how to process the scene and the phone, and how to handle the detained suspect.
1. How should the burglary scene and physical evidence be processed?
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Treat the house as a crime scene once it is safe. The homeowner's consent to check for suspects does not authorize a full evidentiary search, so secure the scene and either obtain written consent or a warrant for the burglary investigation. Photograph the broken window, the lawn, the phone's original location, and the shoe impression before anyone walks through. Use gloves and change them between items. Lift the latent print with powder appropriate to the frame and photograph it in place first; cast the shoe impression with dental stone or an appropriate product, and document weather and substrate. Collect the phone in a Faraday bag or with a power-preserving method, label it, and start a chain-of-custody log. Canvass the neighbor and preserve her contact information. Do not test the phone or suspected drugs at the scene beyond what policy allows.
2. What legal steps are required before searching the smartphone, and how should it be preserved?
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A smartphone's contents are protected by the Fourth Amendment. Under Riley v. California, officers generally need a warrant to search a phone incident to arrest, and the exceptions are narrow. The phone can be seized if there is probable cause it is evidence, but not searched. Preserve it in a Faraday bag to prevent remote wiping or alteration, and do not power it off or browse it unless trained digital-evidence personnel direct otherwise. The lock-screen preview may be photographed as it appears, but do not manipulate the phone to see more. Determine ownership: if it is the victim's, consent may authorize a search, but verify. If it is the suspect's, apply for a warrant describing the phone and the categories of data sought. Document who had custody at every step.
3. The suspect is detained two miles away. What can officers do at the stop, and what is needed for arrest and interview?
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The stop can be based on reasonable suspicion: a matching description, proximity in time and place, and the neighbor's report. Officers may detain briefly, identify, and pat down for weapons if they reasonably suspect the person is armed. The screwdriver in the waistband supports a protective frisk and may be evidence; the ring in the pocket is trickier. If the officer feels an object whose identity as contraband is immediately apparent, plain feel may apply, but a hard object in a pocket is often not enough. Do not dig for the ring without consent, a warrant, or a lawful arrest.
Probable cause to arrest can come from the victim's identification of the ring, the phone, the screwdriver, the neighbor's statement, and the suspect's proximity. After a lawful arrest, a search incident to arrest may include the person and the area within reach, but not the car unless an exception applies. Before custodial interrogation, Mirandize and honor any invocation. Booking questions are allowed. For the phone, apply for a warrant rather than asking for consent after arrest, unless the suspect voluntarily consents with proper documentation.