California, United States of America
The following excerpt is from People v. Levine, 152 Cal.App.3d 1058, 199 Cal.Rptr. 756 (Cal. App. 1984):
"It is, of course, possible for an informant's bare conclusion to be buttressed by secondary information, which itself does not amount to probable cause but which fortifies the first, and for the two in combination to provide sufficient cause for the issuance of a search warrant." (People v. West (1965) 237 Cal.App.2d 801, 807, 47 Cal.Rptr. 341.)
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