California, United States of America
The following excerpt is from People v. Easley, 250 Cal.Rptr. 855, 46 Cal.3d 712 (Cal. 1988):
16 Immunity granted by a federal court acts as a complete bar to any later use of such testimony, in any court, except for a prosecution for perjury. (See, e.g., 18 U.S.C. 6002; Kastigar v. United States (1972) 406 U.S. 441, 92 S.Ct. 1653, 32 L.Ed.2d 212.)
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