United States v. Harris

Justice Stewart joins, and in Part III of which Mr. Justice White joins.

We granted certiorari in this case to consider the recurring question of what showing is constitutionally necessary to satisfy a magistrate that there is a substantial basis for crediting the report of an informant known to the police, but not identified to the magistrate, who purports to relate his personal knowledge of criminal activity.

In 1967 a federal tax investigator and a local constable entered the premises of respondent Harris, pursuant to a search warrant issued by a federal magistrate, and seized jugs of…