Can a police officer detain a suspect based on a mere hunch?

California, United States of America


The following excerpt is from People v. Superior Court (Backley), 149 Cal.Rptr. 349, 85 Cal.App.3d 1020 (Cal. App. 1978):

People v. Gale, 9 Cal.3d 788, 797-798, 108 Cal.Rptr. 852, 859, 511 P.2d 1204, 1211. " 'While a detention of a citizen by a police officer based on a [85 Cal.App.3d 1023] "mere hunch" is unlawful, if there is a rational Suspicion that some activity out of the ordinary is taking place, and some Suggestion that the activity is related to crime, a detention is permissible.' "

People v. Flores, 12 Cal.3d 85, 91, 115 Cal.Rptr. 225, 228, 524 P.2d 353, 356. "Where there is a rational belief of criminal activity with which the suspect is connected, a detention for reasonable investigative procedures infringes no constitutional restraint."

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