California, United States of America
The following excerpt is from People v. Love, B249040 (Cal. App. 2014):
People v. Perez, supra, 2 Cal.4th at p. 1125.) All factors need not be present to sustain a finding of premeditation and deliberation. (People v. Pride (1992) 3 Cal.4th 195, 247.) "A first degree murder conviction will be upheld when there is extremely strong evidence of planning, or when there is evidence of motive with evidence of either planning or manner." (People v. Romero (2008) 44 Cal.4th 386, 401.)
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