California Code, Penal Code - PEN § 141

(a) Except as provided in subdivisions (b) and (c), a person who knowingly, willfully, intentionally, and wrongfully alters, modifies, plants, places, manufactures, conceals, or moves any physical matter, digital image, or video recording, with specific intent that the action will result in a person being charged with a crime or with the specific intent that the physical matter will be wrongfully produced as genuine or true upon a trial, proceeding, or inquiry, is guilty of a misdemeanor.

(b) A peace officer who knowingly, willfully, intentionally, and wrongfully alters, modifies, plants, places, manufactures, conceals, or moves any physical matter, digital image, or video recording, with specific intent that the action will result in a person being charged with a crime or with the specific intent that the physical matter, digital image, or video recording will be concealed or destroyed, or fraudulently represented as the original evidence upon a trial, proceeding, or inquiry, is guilty of a felony punishable by two, three, or five years in the state prison.

(c) A prosecuting attorney who intentionally and in bad faith alters, modifies, or withholds any physical matter, digital image, video recording, or relevant exculpatory material or information, knowing that it is relevant and material to the outcome of the case, with the specific intent that the physical matter, digital image, video recording, or relevant exculpatory material or information will be concealed or destroyed, or fraudulently represented as the original evidence upon a trial, proceeding, or inquiry, is guilty of a felony punishable by imprisonment pursuant to subdivision (h) of Section 1170 for 16 months, or two or three years.

(d) This section does not preclude prosecution under both this section and any other law.