Browse 25 probable cause cases decided by First Circuit. AI-powered summaries, holdings, and legal analysis.
First Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Cartagena, decided by First Circuit on April 15, 2026, resulted in a defendant win outcome. The First Circuit affirmed the district court's denial of the defendant's motion to suppres...
First Circuit Upholds Drug Trafficking Conviction Amid Evidentiary Challenges
United States v. Calderin-Pascual, decided by First Circuit on April 3, 2026, resulted in a defendant win outcome. The First Circuit affirmed the defendant's conviction for drug trafficking and illega...
First Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Munoz-Fontanez, decided by First Circuit on February 27, 2026, resulted in a defendant win outcome. The First Circuit affirmed the district court's denial of a motion to suppress evid...
First Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Shea, decided by First Circuit on February 23, 2026, resulted in a defendant win outcome. The First Circuit affirmed the district court's denial of the defendant's motion to suppress ...
First Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. McBreairty, decided by First Circuit on February 20, 2026, resulted in a defendant win outcome. The First Circuit affirmed the district court's denial of the defendant's motion to sup...
First Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Maldonado-Velazquez, decided by First Circuit on January 16, 2026, resulted in a defendant win outcome. The First Circuit affirmed the district court's denial of the defendant's motio...
First Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Mello, decided by First Circuit on January 7, 2026, resulted in a defendant win outcome. The First Circuit affirmed the district court's denial of the defendant's motion to suppress e...
First Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Griffin, decided by First Circuit on December 19, 2025, resulted in a defendant win outcome. The First Circuit affirmed the district court's denial of the defendant's motion to suppre...
Exigent Circumstances Justify Warrantless Search of Business Premises
United States v. SpineFrontier, Inc., decided by First Circuit on November 26, 2025, resulted in a defendant win outcome. The First Circuit affirmed the district court's denial of the defendant's moti...
First Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Medina-Ortiz, decided by First Circuit on November 24, 2025, resulted in a defendant win outcome. The First Circuit affirmed the district court's denial of the defendant's motion to s...
First Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Maldonado-Vargas, decided by First Circuit on November 14, 2025, resulted in a defendant win outcome. The First Circuit affirmed the district court's denial of the defendant's motion ...
First Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Castillo, decided by First Circuit on October 24, 2025, resulted in a defendant win outcome. The First Circuit affirmed the district court's denial of the defendant's motion to suppre...
First Circuit: Knock-and-Announce Rule Not Violated in Warrant Execution
United States v. Pittmann, decided by First Circuit on October 22, 2025, resulted in a defendant win outcome. The First Circuit affirmed the district court's denial of a motion to suppress evidence se...
First Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Amado, decided by First Circuit on October 17, 2025, resulted in a defendant win outcome. The First Circuit affirmed the district court's denial of the defendant's motion to suppress ...
First Circuit Upholds Warrantless Vehicle Search Based on Voluntary Consent
United States v. Otero, decided by First Circuit on September 18, 2025, resulted in a defendant win outcome. The First Circuit affirmed the district court's denial of the defendant's motion to suppres...
First Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Medina, decided by First Circuit on September 9, 2025, resulted in a defendant win outcome. The First Circuit affirmed the district court's denial of the defendant's motion to suppres...
First Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Negron-Cruz, decided by First Circuit on August 28, 2025, resulted in a defendant win outcome. The First Circuit affirmed the district court's denial of the defendant's motion to supp...
First Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Morales-Ortiz, decided by First Circuit on August 19, 2025, resulted in a defendant win outcome. The First Circuit affirmed the district court's denial of the defendant's motion to su...
First Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Hernandez-Rodriguez, decided by First Circuit on August 11, 2025, resulted in a defendant win outcome. The First Circuit affirmed the district court's denial of the defendant's motion...
First Circuit Affirms Denial of Preliminary Injunction in Defamation Case
Cruz-Cedeno v. Vega-Moral, decided by First Circuit on August 8, 2025, resulted in a defendant win outcome. The First Circuit affirmed the district court's denial of a preliminary injunction sought by...
First Circuit Affirms Summary Judgment in Excessive Force Case
Cintron v. Bibeault, decided by First Circuit on August 5, 2025, resulted in a defendant win outcome. The First Circuit affirmed the district court's grant of summary judgment to the defendants in a c...
First Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Pizarro-Mercado, decided by First Circuit on July 30, 2025, resulted in a defendant win outcome. The First Circuit affirmed the district court's denial of the defendant's motion to su...
First Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Freeman, decided by First Circuit on July 29, 2025, resulted in a defendant win outcome. The First Circuit affirmed the district court's denial of the defendant's motion to suppress e...
First Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Coleman, decided by First Circuit on July 21, 2025, resulted in a defendant win outcome. The First Circuit affirmed the district court's denial of the defendant's motion to suppress e...
First Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Munoz-Gonzalez, decided by First Circuit on July 17, 2025, resulted in a defendant win outcome. The First Circuit affirmed the district court's denial of the defendant's motion to sup...
CaseLawBrief currently tracks 25 probable cause cases from First Circuit. This number is updated as new opinions are published.
Outcome breakdown: Defendant Win: 25.
Each case page on CaseLawBrief includes an AI-generated plain English summary, key holdings, and legal analysis. Click any case above to read its full analysis.