Agar v. Superior Court

In Agar v. Superior Court (1971) 21 Cal.App.3d 24, the court states the following: "To express it in a somewhat different manner, a policeman may arrest without an arrest warrant when ever he has probable cause to believe that the person to be arrested has committed a public offense in his presence. ( Pen. Code, 836.) Juridically, probable cause is a legal yardstick that is used to measure reason ableness of belief; probable cause sets legal minimums on the quantity and quality of belief that will support a lawful arrest." ( Id. , at p. 29.)