Individuals violating any of the reporting requirements of § 4.51 of this part or who present any forged, altered, or false document or paper to Customs in connection with this section, may be liable for certain civil penalties, as provided under 19 U.S.C. 1459,in. Further, if the violation of these reporting requirements is intentional, upon conviction, additional criminal penalties may be applicable, as provided by under 19 U.S.C. 1459,in.