What is reasonable cause of arrest?

'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, 53 Cal.2d 407, 412, 2 Cal.Rptr. 14, 17, 348 P.2d 577, 580.)

The defendants' automobile was searched and they were arrested without a warrant. The burden therefore was with the prosecution to show justification. (Badillo v. Superior Court, 46 Cal.2d 269, 272, 294 P.2d 23.)