California, United States of America
The following excerpt is from People v. Villalobos, H043058 (Cal. App. 2018):
is about to commit a violent crime; (4) the detention closely follows a violent crime by a person matching the suspect's description and/or vehicle; (5) the suspect acts in a manner raising a reasonable possibility of danger or flight; or (6) the suspects outnumber the officers." (People v. Stier (2008) 168 Cal.App.4th 21, 27-28.)
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