Pestilos v. Generoso

Summary

Petitioners challenged the validity of their warrantless arrest following an altercation with Atty. Generoso, arguing they were merely 'invited' rather than arrested and seeking regular preliminary investigation instead of inquest proceeding. The Supreme Court comprehensively examined the evolution of warrantless arrest rules under Section 5(b), Rule 113, establishing that valid warrantless arrest requires: (1) crime just committed; and (2) probable cause based on arresting officer's personal knowledge of facts/circumstances. The Court found the arrest valid because police responded within one hour, victim identified petitioners, medical evidence corroborated injuries, and petitioners admitted involvement. The decision clarifies that 'personal knowledge' doesn't require witnessing the crime but sufficient immediate circumstances indicating probable cause. The case significantly contributes to criminal procedure jurisprudence by tracing historical development of warrantless arrest provisions and establishing clear standards for their application.