What constitutes probable cause for a search?

Probable cause for a search is established when there is sufficient evidence indicating that a crime has been committed or is likely to be committed. This means that law enforcement must have reliable information to warrant a belief that evidence related to a crime could be found in the location being searched. This evidence can come from various sources, including direct observations by officers, reports from credible informants, or physical evidence that presents a reasonable basis for suspicion.

Options that suggest suspicion merely based on hearsay or testimonials without corroborative evidence do not meet the threshold of probable cause, as these sources lack reliability and substantiality needed for such investigative actions. Similarly, the general expertise of law enforcement does not inherently constitute probable cause; it must be supported by specific evidence or facts that point toward criminal activity. Therefore, evidence of a crime that has occurred or is about to occur is the essential criterion for defining probable cause in the context of searches.