G.S. 15A-245 provides that information other than that contained in a search warrant affidavit may not be considered by the issuing official in determining whether probable cause exists to issue the warrant unless the information is either recorded or contemporaneously summarized in the record or on the face of the warrant by the issuing official. This is commonly known as the “four corners” rule because the issuing official and later a judge at a suppression hearing may only consider information within the four corners of the search warrant (with the limited exception mentioned above). The issue does not arise often in appellate court opinions. However, it was involved in the June 21, 2016, North Carolina Court Appeals case of State v. Brown, available here, and is the subject of this post.