December 23, 1970.
 Searches and Seizures — Warrant — Information From Informant — Basis for Reliability. A magistrate, sitting as a neutral figure determining if probable cause has been shown to justify issuance of a search warrant, must be informed of the source of the information in the supporting affidavit. If the information is from other than the affiant's personal knowledge, the magistrate, in order to judge the informant's credibility, must be made cognizant of some of the underlying facts and circumstances which led to the informant's conclusions passed along to the affiant. [See Ann. 14 A.L.R.2d 605; 47 Am. Jur., Searches and Seizures (1st ed. § 24).]
 Searches and Seizures — Warrant — Basis — Function of Magistrate. While a magistrate issuing a search warrant may draw common sense inferences from the facts and circumstances contained in a supporting affidavit, there must be substantial factual basis for the ultimate conclusion that the items sought are probably located at the place to be searched.
Certiorari to review a judgment of the Superior Court for Spokane County, No. 19833, William H. Williams, J., entered October 22, 1970.
Paul Klasen, Jr., Prosecuting Attorney, for petitioner.
C.E. Hormel, for respondent.
Prosecution for arson, destruction of property, and violation of the explosive code. The State seeks review of an order quashing a search warrant.
Defendant, Robert Peterson, was arrested without a warrant on August 20, 1970. Later the same day, the Grant County Sheriff's office obtained a warrant to search defendant's residence and appurtenant property for certain materials and devices usable in the commission of arson and the puncturing of truck tires. The search was made and alleged evidence discovered.
In October 1970, the Spokane County Superior Court, on defendant's motion, quashed the warrant. Whereupon, the state pursuant to CAROA 57 applied to this court for a writ of certiorari to review the trial court's action. After a show cause hearing was held, the writ was issued in accordance with the rule established in State v. Whitney, 69 Wn.2d 256, 418 P.2d 143 (1966).
After hearing argument of counsel, and reviewing the complaint and supporting affidavit, as well as the applicable United States Supreme Court decisions, we are constrained to hold that the warrant was properly quashed.
The point of the Fourth Amendment, [as applicable to the states through the Fourteenth Amendment, Ker v. California, 374 U.S. 23, 10 L.Ed.2d 726, 83 S.Ct. 1623 (1963)] which often is not grasped by zealous officers, is not that it denies law enforcement the support of the usual inferences which reasonable men draw from evidence. Its protection consists in requiring that those inferences be drawn by a neutral and detached magistrate instead of being judged by the officer engaged in the often competitive enterprise of ferreting out crime.
Although a supporting affidavit may be based upon hearsay, Jones v. United States, 362 U.S. 257, 4 L.Ed.2d 697, 80 S.Ct. 725, 78 A.L.R.2d 233 (1960), the issuing magistrate must be informed of the source of the information contained therein and if it is from other than the affiant's personal knowledge, the affiant must also set forth some of the underlying facts and circumstances which led to the informant's conclusions that were passed along to the affiant, so that the credibility of the informant may be ascertained by the magistrate. Aguilar v. Texas, 378 U.S. 108, 12 L.Ed.2d 723, 84 S.Ct. 1509 (1964); Spinelli v. United States, 393 U.S. 410, 21 L.Ed.2d 637, 89 S.Ct. 584 (1969). While the issuing magistrate may draw common sense inferences from the facts and circumstances contained in the affidavit, see United States v. Ventresca, 380 U.S. 102, 13 L.Ed.2d 684, 85 S.Ct. 741 (1965), there must be a substantial factual basis for the ultimate conclusion that the items sought are probably located at the place to be searched. State v. Walcott, 72 Wn.2d 959, 435 P.2d 994 (1967); Jones v. United States, supra; Nathanson v. United States, 290 U.S. 41, 78 L.Ed. 159, 54 S.Ct. 11 (1933).
The supporting affidavit of the deputy sheriff in the present case meets none of the standards established by the United States Supreme Court in the above cited cases.
The trial court's order is affirmed.