What is reasonable cause when a police officer stops a person from leaving the scene of crime?

'There is no exact formula for the determination of reasonableness. Each case must be decided on its own facts and circumstances [citations omitted] * * *.' (People v. Ingle, 53 Cal.2d 407, 412, 2 Cal.Rptr. 14, 17, 348 P.2d 577, 580 and cases there cited.) 'Reasonable cause has been generally defined to be such a state of facts as would lead a man of ordinary care and prudence to believe and conscientiously entertain an honest and strong suspicion that the person is guilty of a crime.' (People v. Ingle, supra, at 412-413, 2 Cal.Rptr. at 17, 348 P.2d at 580 and cases there cited.) Good faith of the officer alone is not sufficient, but the evidence

Page 145