California, United States of America
The following excerpt is from People v. Keith, F066935 (Cal. App. 2016):
Cal.4th 99, 175.) The prosecutor's duty to disclose such evidence exists even if the defense made no request concerning the evidence. (United States v. Agurs (1976) 427 U.S. 97, 107.) The duty also encompasses impeachment evidence. (United States v. Bagley (1985) 473 U.S. 667, 676.)
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