12. (1) Any person who within a notified area, and if any period or periods are specified under sub-section (2) of section 9, then only during such period or periods-(a) wilfully obstructs or interferes with the carrying out of field firing or artillery practice, or (b) without due authority enters or remains in any camp, or(c) without due authority enters or remains in any area declared to be a danger zone at a time when entry thereto is prohibited, or(d) without due authority interferes with any flag or mark or target or any apparatus used for the purposes of the practice,he shall be punishable with fine which may extend to ten Taka. (2) Whoever wilfully contravenes the provisions of sub-section (2) of section 10A, or violates any of the conditions imposed thereunder, shall be punishable with imprisonment for a term which may extend to one month, or with fine which may be extended to fifty Taka, or with both, and any expenses incurred in removing the effects of the offence may be recovered from him in the manner provided by the law for the time being in force for the recovery of fines.