Police officer conducted an investigatory stop of Strieff without reasonable suspicion.
E809983
Utah v. Strieff is a 2016 U.S. Supreme Court case that addressed whether evidence discovered after an unlawful investigatory stop could be admitted under the attenuation doctrine when an outstanding arrest warrant is found.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Police officer conducted an investigatory stop of Strieff without reasonable suspicion. canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9607438 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Police officer conducted an investigatory stop of Strieff without reasonable suspicion. Context triple: [Utah v. Strieff, factPattern, Police officer conducted an investigatory stop of Strieff without reasonable suspicion.]
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A.
Lawlessness in Law Enforcement
"Lawlessness in Law Enforcement" is a landmark 1931 report by the Wickersham Commission that exposed widespread police misconduct and abuses in the United States, particularly in the enforcement of Prohibition laws.
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B.
Met Police
Met Police is the territorial police force responsible for law enforcement across Greater London, excluding the City of London.
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C.
Report on Lawlessness in Law Enforcement
The Report on Lawlessness in Law Enforcement is a landmark 1931 Wickersham Commission study that exposed widespread police misconduct and abuses in the United States, particularly in the enforcement of Prohibition laws.
-
D.
ACT Policing
ACT Policing is the community policing arm of the Australian Federal Police responsible for law enforcement and public safety in the Australian Capital Territory.
-
E.
Mobile Investigation Unit
The Mobile Investigation Unit is a specialized division of the Tokyo Metropolitan Police Department responsible for rapid-response criminal investigations and on-site forensic support.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Police officer conducted an investigatory stop of Strieff without reasonable suspicion. Target entity description: Utah v. Strieff is a 2016 U.S. Supreme Court case that addressed whether evidence discovered after an unlawful investigatory stop could be admitted under the attenuation doctrine when an outstanding arrest warrant is found.
-
A.
Lawlessness in Law Enforcement
"Lawlessness in Law Enforcement" is a landmark 1931 report by the Wickersham Commission that exposed widespread police misconduct and abuses in the United States, particularly in the enforcement of Prohibition laws.
-
B.
Met Police
Met Police is the territorial police force responsible for law enforcement across Greater London, excluding the City of London.
-
C.
Report on Lawlessness in Law Enforcement
The Report on Lawlessness in Law Enforcement is a landmark 1931 Wickersham Commission study that exposed widespread police misconduct and abuses in the United States, particularly in the enforcement of Prohibition laws.
-
D.
ACT Policing
ACT Policing is the community policing arm of the Australian Federal Police responsible for law enforcement and public safety in the Australian Capital Territory.
-
E.
Mobile Investigation Unit
The Mobile Investigation Unit is a specialized division of the Tokyo Metropolitan Police Department responsible for rapid-response criminal investigations and on-site forensic support.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
U.S. Supreme Court case
ⓘ
criminal procedure case ⓘ |
| appliedDoctrine | attenuation doctrine ⓘ |
| appliedPrecedent |
Brown v. Illinois
NERFINISHED
ⓘ
Wong Sun v. United States NERFINISHED ⓘ |
| aroseFrom | State of Utah NERFINISHED ⓘ |
| citation | 579 U.S. ___ (2016) ⓘ |
| concerns |
admissibility of evidence obtained after unlawful stop
ⓘ
outstanding arrest warrant discovered after stop ⓘ unlawful investigatory stop ⓘ |
| constitutionalProvision | Fourth Amendment to the U.S. Constitution NERFINISHED ⓘ |
| decisionDate | 2016-06-20 ⓘ |
| dissentingJustices |
Elena Kagan
NERFINISHED
ⓘ
Ruth Bader Ginsburg NERFINISHED ⓘ Sonia Sotomayor NERFINISHED ⓘ |
| dissentOpinionBy | Justice Sonia Sotomayor NERFINISHED ⓘ |
| effectOnLaw | Expanded circumstances where evidence from an unlawful stop may be admitted under attenuation doctrine. ⓘ |
| factPattern |
Officer arrested Strieff on the warrant and searched him incident to arrest.
ⓘ
Officer discovered an outstanding arrest warrant for Strieff during the stop. ⓘ Officer found drugs and drug paraphernalia during the search. ⓘ Police officer conducted an investigatory stop of Strieff without reasonable suspicion. ⓘ |
| hasDocketNumber | No. 14-1373 ⓘ |
| holding | Evidence seized incident to a lawful arrest on a valid warrant is admissible when the warrant is discovered after an unlawful investigatory stop, because the discovery of the warrant attenuates the connection between the unlawful stop and the evidence. ⓘ |
| jurisdiction | Supreme Court of the United States NERFINISHED ⓘ |
| keywords |
fruit of the poisonous tree
ⓘ
outstanding warrant ⓘ search incident to arrest ⓘ unlawful stop ⓘ |
| legalIssue |
Fourth Amendment unreasonable searches and seizures
ⓘ
attenuation doctrine ⓘ exclusionary rule ⓘ |
| lowerCourt | Utah Supreme Court NERFINISHED ⓘ |
| lowerCourtHolding | Evidence should be suppressed as fruit of an unlawful stop. ⓘ |
| majorityJustices |
Anthony M. Kennedy
NERFINISHED
ⓘ
Clarence Thomas NERFINISHED ⓘ John G. Roberts Jr. NERFINISHED ⓘ Samuel A. Alito Jr. NERFINISHED ⓘ Stephen G. Breyer NERFINISHED ⓘ |
| majorityOpinionBy | Justice Clarence Thomas NERFINISHED ⓘ |
| petitioner | State of Utah NERFINISHED ⓘ |
| questionPresented | Whether the attenuation doctrine applies when an officer discovers a valid, pre-existing, and untainted arrest warrant during an unlawful investigatory stop. ⓘ |
| respondent | Edward Joseph Strieff Jr. NERFINISHED ⓘ |
| resultForDefendant | Strieff was denied suppression of the evidence. NERFINISHED ⓘ |
| resultForState | State of Utah prevailed in the Supreme Court. NERFINISHED ⓘ |
| separateDissentOpinionBy | Justice Elena Kagan NERFINISHED ⓘ |
| SupremeCourtDisposition | Reversed and remanded ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Police officer conducted an investigatory stop of Strieff without reasonable suspicion. Description of subject: Utah v. Strieff is a 2016 U.S. Supreme Court case that addressed whether evidence discovered after an unlawful investigatory stop could be admitted under the attenuation doctrine when an outstanding arrest warrant is found.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
Utah v. Strieff (dissent on Fourth Amendment rights)
→
factPattern
→
Police officer conducted an investigatory stop of Strieff without reasonable suspicion.
ⓘ
subject surface form:
Utah v. Strieff