A skilled Los Angeles Criminal Defense Attorney can effectively show a lack of probable cause and can argue to have evidence suppressed. Ensure an Application for Petition form, a Probable Cause Declaration, and applicable Uniform Crime Reports are completed and submitted to the.San Diego Drug Defense Lawyer Michael Rehm discusses arrests and search warrants. Available for free consultations at (619) 787-3456. Arrests without a warrant necessitate probable cause. Arrest warrants allow police to detain you based on probable cause that you've committed a crime. If there is no probable cause to make an arrest, then the item must be returned to the subject. California's stop-and-frisk laws allow police to detain you temporarily if they have a reasonable belief you are involved in criminal activity. The arrest is without probable cause or an arrest warrant. V=3wC2rTqouik In California, the police can arrest you for committing a crime with or without a warrant.