Is a warrantless arrest reasonable under the Fourth Amendment?

A warrantless arrest is reasonable under the Fourth Amendment whenever an officer has probable cause to believe the person arrested has committed a criminal offense. (People v. Kraft (2000) 23 Cal.4th 978. 1037.) Probable cause exists when the facts known to the arresting officer would lead a person of ordinary care and prudence to entertain an honest and strong suspicion that the arrested person is guilty of a crime. Probable cause must be viewed under the totality of the circumstances, not on any isolated event. Arrests are unlawful if they are made without probable cause in the hope that something might turn up. (In re J.G. (2010) 188 Cal.App.4th 1501, 1506 (J.G.).) A peace officer has probable cause to arrest a suspect when a public offense is committed in

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