The following excerpt is from De Payne v. U.S., 60 F.3d 832 (9th Cir. 1995):
Probable cause exists when, considering the totality of the circumstances, "there is a fair probability that contraband or evidence of a crime will be found in a particular place." Illinois v. Gates, 462 U.S. 213, 238 (1982). The magistrate judge's finding of probable cause will be overturned on appeal only if it lacks a substantial basis.
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