Can a witness testify as a gang expert?

California, United States of America


The following excerpt is from The People v. Iniquez, B216516, No. MA041780 (Cal. App. 2010):

A witness testifying as an expert may offer an opinion "[b]ased on matter... perceived by or personally known to the witness or made known to him... whether or not admissible, that is of a type that reasonably may be relied upon by an expert in forming an opinion upon the subject to which his testimony relates." (Evid. Code, 801.) A gang expert may rely on any information obtained in conversations with gang members or through an investigation of gang-related crimes. (People v. Duran (2002) 97 Cal.App.4th 1448, 1464-1466.)

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