The following excerpt is from U.S. v. Levasseur, 816 F.2d 37 (2nd Cir. 1987):
Under Franks v. Delaware, 438 U.S. 154, 98 S.Ct. 2674, 57 L.Ed.2d 667 (1978), a district court may not admit evidence seized pursuant to a warrant if the warrant was based on materially false and misleading information. As the district court correctly observed, materially misleading omissions as well as misrepresentations may be challenged by the defense. See e.g., United States v. Ferguson, 758 F.2d 843, 848 (2d Cir.), cert. denied, --- U.S. ----, 106 S.Ct. 124, 88 L.Ed.2d 102 (1985).
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