Aguilar v. Texas
E522192
Aguilar v. Texas is a 1964 U.S. Supreme Court decision that established a two-pronged test for evaluating the sufficiency of informants’ tips in supporting probable cause for search warrants.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Aguilar v. Texas canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T5478435 — 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: Aguilar v. Texas Context triple: [Illinois v. Gates, relatedCase, Aguilar v. Texas]
-
A.
Jurek v. Texas
Jurek v. Texas is a 1976 U.S. Supreme Court decision that upheld the constitutionality of Texas’s capital sentencing scheme and helped define the modern framework for death penalty procedures under the Eighth Amendment.
-
B.
Sossamon v. Texas
Sossamon v. Texas is a 2011 U.S. Supreme Court decision that held states do not consent to suits for money damages under the Religious Land Use and Institutionalized Persons Act by accepting federal funds, reinforcing principles of state sovereign immunity.
-
C.
Escobedo v. Illinois
Escobedo v. Illinois is a landmark 1964 U.S. Supreme Court case that expanded the Sixth Amendment right to counsel during police interrogations and helped lay the groundwork for the later Miranda warnings.
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D.
Branch v. Texas
Branch v. Texas is a U.S. Supreme Court case addressing the constitutionality and application of the death penalty in the wake of the landmark Furman v. Georgia decision.
-
E.
Zurawski v. State of Texas
Zurawski v. State of Texas is a high-profile lawsuit in which women denied medically necessary abortions challenge the state’s near-total abortion ban as unconstitutional and dangerously restrictive to pregnant patients’ health.
- 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: Aguilar v. Texas Target entity description: Aguilar v. Texas is a 1964 U.S. Supreme Court decision that established a two-pronged test for evaluating the sufficiency of informants’ tips in supporting probable cause for search warrants.
-
A.
Jurek v. Texas
Jurek v. Texas is a 1976 U.S. Supreme Court decision that upheld the constitutionality of Texas’s capital sentencing scheme and helped define the modern framework for death penalty procedures under the Eighth Amendment.
-
B.
Sossamon v. Texas
Sossamon v. Texas is a 2011 U.S. Supreme Court decision that held states do not consent to suits for money damages under the Religious Land Use and Institutionalized Persons Act by accepting federal funds, reinforcing principles of state sovereign immunity.
-
C.
Escobedo v. Illinois
Escobedo v. Illinois is a landmark 1964 U.S. Supreme Court case that expanded the Sixth Amendment right to counsel during police interrogations and helped lay the groundwork for the later Miranda warnings.
-
D.
Branch v. Texas
Branch v. Texas is a U.S. Supreme Court case addressing the constitutionality and application of the death penalty in the wake of the landmark Furman v. Georgia decision.
-
E.
Zurawski v. State of Texas
Zurawski v. State of Texas is a high-profile lawsuit in which women denied medically necessary abortions challenge the state’s near-total abortion ban as unconstitutional and dangerously restrictive to pregnant patients’ health.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
United States Supreme Court case
ⓘ
criminal procedure case ⓘ |
| areaOfLaw |
criminal law
ⓘ
criminal procedure ⓘ search and seizure ⓘ |
| basisOfKnowledgeProngDescription | Requires facts showing the underlying circumstances from which the informant concluded that evidence of a crime would be found in a particular place. ⓘ |
| category |
United States Supreme Court cases of 1964
ⓘ
United States Supreme Court cases on the Fourth Amendment ⓘ |
| citation | 378 U.S. 108 ⓘ |
| constitutionalProvision | Fourth Amendment to the United States Constitution ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| court | Supreme Court of the United States ⓘ |
| decisionDate | 1964 ⓘ |
| effect |
Imposed specific requirements on magistrates evaluating affidavits based on informant tips.
ⓘ
Limited the use of conclusory statements in affidavits supporting search warrants. ⓘ |
| establishedTest |
Aguilar two-pronged test
ⓘ
linked to:
Aguilar–Spinelli test
|
| holding |
An affidavit must provide underlying circumstances showing how the informant obtained the information and why the officer believed the informant was credible or the information reliable.
ⓘ
The affidavit based on an unnamed informant’s tip was insufficient to establish probable cause for a search warrant under the Fourth Amendment. ⓘ |
| influenceOnLaterCase | The Aguilar two-pronged test was refined and replaced by the totality-of-the-circumstances test in Illinois v. Gates. ⓘ |
| jurisdiction |
United States
ⓘ
linked to:
United States of America
|
| languageOfDecision | English ⓘ |
| legalDoctrine | two-pronged test for informant tips ⓘ |
| legalIssue |
probable cause for issuance of a search warrant
ⓘ
use of informant tips to establish probable cause ⓘ |
| page | 108 ⓘ |
| party |
Aguilar
ⓘ
State of Texas ⓘ
linked to:
Texas
|
| precedentStatus | partially superseded by Illinois v. Gates with respect to the rigid application of the two-pronged test. ⓘ |
| relatedCase |
Illinois v. Gates
ⓘ
Spinelli v. United States ⓘ |
| reporter | United States Reports ⓘ |
| standardOfReview | probable cause for search warrant ⓘ |
| stateParty | Texas ⓘ |
| subjectMatter |
judicial review of warrant applications
ⓘ
police use of confidential informants ⓘ |
| testProng |
basis-of-knowledge prong
ⓘ
veracity prong ⓘ |
| timePeriod | Warren Court era ⓘ |
| topic |
informant reliability
ⓘ
probable cause standard ⓘ search warrant affidavits ⓘ |
| veracityProngDescription | Requires facts showing the underlying circumstances from which the officer concluded that the informant was credible or the information was reliable. ⓘ |
| volume | 378 ⓘ |
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: Aguilar v. Texas Description of subject: Aguilar v. Texas is a 1964 U.S. Supreme Court decision that established a two-pronged test for evaluating the sufficiency of informants’ tips in supporting probable cause for search warrants.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.