Probable cause must be based on

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Probable cause must be based on facts. The Fourth Amendment of the U.S. Constitution requires that a search or arrest be based on probable cause, which means that there must be enough facts or evidence to warrant a reasonable person to believe that a crime has been, is being, or will be committed. The Supreme Court has established that probable cause must be based on objective facts and not just mere suspicion or hunch. The Aguilar/Spinelli test is a method for evaluating the reliability of an informant's tip, but it is not the only way to establish probable cause. Reasonable suspicion is a lower standard of suspicion needed for a Terry stop, and proof beyond a reasonable doubt is the high standard of proof needed for a criminal conviction at trial.

Probable Cause Must Be Based on