California Code, Penal Code - PEN § 118.1

(a) Every peace officer who, in their capacity as a peace officer, knowingly and intentionally makes, or causes to be made, any material statement in a peace officer report, or to another peace officer and the statement is included in a peace officer report, regarding the commission or investigation of any crime, knowing the statement to be false, is guilty of filing a false report, punishable by imprisonment in the county jail for up to one year, or in the state prison for one, two, or three years.

(b) This section does not apply to a peace officer writing or making a peace officer report, with regard to a false statement that the peace officer included in the report that is attributed to any other person, unless the peace officer writing or making the report knows the statement to be false and is including the statement to present the statement as being true.