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Pennsylvania Supremes: Modified “Vertical” Approach to Collective Knowledge Doctrine
by Richard Resch
In January 2018, the Pennsylvania Supreme Court refined the contours of the collective knowledge doctrine as it exists in the Commonwealth. The doctrine relates to the warrantless seizure of a person by an officer acting as part of a group in a coordinated investigation. The …
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More from this issue:
- Indigent Defense in America: An Affront to Justice, by Christopher Zoukis
- News in Brief
- Mississippi Supreme Court Caps Attorney’s Fees in Wrongful Conviction Cases at 25%
- West Virginia Supremes: Previous Nonviolent Crimes, Life Sentence Unconstitutional, by Dale Chappell
- Fourth Circuit: No Qualified Immunity for Deputies in Shooting of Armed Suspect, by Dale Chappell
- California Court of Appeal Holds State Must Prove Stolen Car’s Value for Felony Theft of Vehicle Conviction, by Dale Chappell
- Don't Take a Genetic Test Without Reading This First
- “Get Out of Jail” Free Cards for Cops’ Family, Friends Cut, by Christopher Zoukis
- Even Prosecutors Can’t Get Secret List of L.A. Cops With Credibility Problems, by Dale Chappell
- Sixth Circuit: Sentence Enhancement Inapplicable, Sales of Guns and Drugs Separate, by Dale Chappell
- Philly Decriminalizes Possession of Small Amounts of Marijuana, by Christopher Zoukis
- Magistrate Judge: Change Rule of Evidence That Allows Prior Conviction to Impeach Witness, by Derek Gilna
- New York Court of Appeals: Defendant Denied Right to Speedy Trial After 6-Year Delay, by Richard Resch
- Texas Supremes: Possession of Gun Does Not Constitute “Use” Under Forfeiture Statute, by Dale Chappell
- Mass. Supremes: Consent to Search in Vehicle Did Not Extend to Engine, by Richard Resch
- Gang Enhancement: California Court Reverses Denial of Motion for New Trial, by Derek Gilna
- $900,000 to Octogenarian Tased by Police
- Fired New Orleans Cops Just Move to Other Departments, by Dale Chappell
- U.S. Supreme Court: Guilty Plea No Bar to Defendant Challenging Constitutionality, by Richard Resch
- Washington Supremes: Former Prisoner Can Take Bar, by Derek Gilna
- Illinois Supremes: Barring Firearms Within 1,000 Feet of Parks Facially Unconstitutional, by Richard Resch
- Lack of Criminal Intent: Missouri Supreme Acquits on Drug Possession Charge, by Suzanne Bring
- Cops Killed 100 Times More Americans Than Terrorists Did in 2017, by Christopher Zoukis
- $275,000 to Man Arrested for Recording Police
- 7 Years Pre-Trial Incarceration: Vacated Convictions
- Pennsylvania Supreme Court: Police Emergency Lights Next to Parked Car Constitute Seizure, by Dale Chappell
- California Supreme: “Beyond a Reasonable Doubt” Standard for Second Strike, by Edward Lyon
- Not Disclosed: NSA-Obtained Evidence, by Derek Gilna
- Video: A Two-Edged Sword, by Michael Avery
- $4.8 Million Settles Kansas City Police Shooting, by Matthew Clarke
- Pennsylvania Supremes: Modified “Vertical” Approach to Collective Knowledge Doctrine, by Richard Resch
- Defense Fails to Present Diminished Capacity, Ninth Circuit Vacates Murder Convictions, by Christopher Zoukis
- Kansas Supremes: No Lifetime Post-Release Supervision, by Derek Gilna
- Mass. Disciplines Prosecutors: No More Business as Usual, by Derek Gilna
- Miranda Violation: 9th Circuit Reverses Murder Conviction, by Christopher Zoukis
- Law Enforcement Scrambles to Hide Stingray Use, by Derek Gilna
- Officer-Involved Shooting Data? Hard to Find!, by Christopher Zoukis
- Defendant’s Right to Testify Violated: Hawaii Supreme Vacates Conviction, by Norma Gonzalez
- Georgia Attempts to Limit Access to Official State Law, by Derek Gilna
- Sheriff Wanted Medical Examiner to Alter Reports, by Dale Chappell
- Witness Misidentification: Ohio Man’s 14 Convictions Vacated, by Mark Wilson
- Texas: Retroactive Application of Law That Decriminalized Specific Conduct Not Violation of Separation of Powers, by Dale Chappell
- Data: High Rate of Sexual Abuse by Cops, by Christopher Zoukis
- $ Millions to Settle Philly Police Misconduct Cases, by Derek Gilna
- Fight Mass Incarceration? There’s an App for That, by Derek Gilna
More from Richard Resch:
- Barred Before the Merits: A Federal Prisoner’s Guide to Federal Habeas Relief, Oct. 15, 2026
- Formally Available, Rarely Granted: A State Prisoner’s Guide to Federal Habeas Relief, Sept. 1, 2026
- Massachusetts Supreme Judicial Court Announces Postconviction Forensic Testing Statute Permits Digital Forensic Analysis of Cellphones, Holding Chapter 278A Not Limited to Tangible Evidence Testable for Biological Material, Aug. 1, 2026
- Relevant Conduct: How Federal Sentencing Law Punishes More Than the Crime of Conviction, Aug. 1, 2026
- New Mexico Supreme Court Announces Article II, Section 10 Exclusionary Rule Governs Admissibility of Evidence Seized Outside State by Non-New Mexico Officers, Aug. 1, 2026
- Surveillance for Sale: The Data Broker Loophole and the Fourth Amendment After Chatrie, July 1, 2026
- Retroactive Guideline Amendments: The Narrow Path to a Federal Sentence Reduction, July 1, 2026
- SCOTUS Announces Accessing Google Location History Data Constitutes a Fourth Amendment Search, Holding That Neither Brief Duration Nor Third-Party Storage Negates Reasonable Expectation of Privacy in Cellphone Location Information, July 1, 2026
- Your DNA Was at the Scene, But You Weren’t: How Touch DNA Is Convicting the Innocent, June 1, 2026
- U.S. Sentencing Commission: 2026 Amendments to the Federal Sentencing Guidelines, June 1, 2026
More from these topics:
- Louisiana Detainee Captured After Two Previous Escapes, Dec. 1, 2025. Criminal Prosecution, Escapes, Jail Specific, Assaults on Staff, Prior Conviction/Sentence/Incarceration.
- Indiana Supreme Court Announces Whether Defendant’s Actions Were “Objectively Reasonable” Justifying Self-Defense Can Be Considered in Hindsight, Sept. 15, 2025. U.S. Sentencing Guidelines, Criminal Procedure, Appealable Issues/Orders.
- Connecticut Supreme Court Announces Teague’s ‘Watershed’ Rule Exception to Nonretroactivity of New Constitutional Rule of Criminal Procedure on Collateral Review Has ‘Continued Vitality’ in Connecticut, Adoption of Third Exception to Teague’s Nonretroacti, April 15, 2025. Retroactivity, Criminal Procedure, Federal Rules of Criminal Procedure, Eyewitness Identification.
- Examining Pro-Prosecution Bias in the Judiciary: Unconscious Biases of a Prosecutorial Background, Feb. 15, 2025. Criminal Prosecution, Juror Bias, Impartial Jury.
- Executions Rise in 2023, Number on Death Row Falls, June 1, 2024. Criminal Prosecution, Statistics/Trends, Death Penalty, Death Row.
- U.N. Panel Finds Rampant Racism in U.S. Criminal Justice System, June 1, 2024. Racial Discrimination, Commentary/Reviews, Crime/Demographics, Criminal Prosecution, Statistics/Trends.
- Over 5,000 Prisoners Federally Sentenced Every Month, May 1, 2024. Criminal Prosecution, Statistics/Trends, U.S. Sentencing Guidelines, Bureau of Prisons (BOP).
- Regarding Death Penalty, Biden’s Actions Don’t Align with His Mouth, May 1, 2024. Commentary/Reviews, Criminal Prosecution, Statistics/Trends, Death Penalty.
- Sentencing Project Proposes Remedies for Racial Disparities Behind Bars, May 1, 2024. Racial Discrimination, Criminal justice system reform, Criminal Prosecution.
- 428 Georgia Prison Employees Criminally Charged in Five Years, April 1, 2024. Guard Misconduct, Criminal Prosecution, Statistics/Trends.





