Cal. Elec. Code § 18104

An individual or organization having charge of affidavits of registration is guilty of a misdemeanor who knowingly neglects or refuses to return affidavits of registration as provided in Article 3 (commencing with Section 2138) of Chapter 2 of Division 2. The county elections official shall report to the district attorney of the county, under oath, the names of all individuals or organizations who have failed to return the affidavits. The district attorney shall take appropriate civil or criminal action.