California, United States of America
The following excerpt is from The People v. Membreno, B216861, Super. Ct. No. BA336008 (Cal. App. 2010):
Furthermore, as the court pointed out in People v. Samaniego, "[i]t would be virtually impossible for a person to know of another's intent to murder and decide to aid in accomplishing the crime without at least a brief period of deliberation and premeditation, which is all that is required." (172 Cal.App.4th at p. 1166.)
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