Explosives. [Ch. 30. No. 4. obstructs such officer or constable in the execution of his duty under this section, shalj be liable to a fine of two hundred and forty dollars, and shall also be liable to forfeit all explosives and ingredients thereof which are, at the time of the offence, in his possession or under his control at the said place. 42. Where any officer or constable as aforesaid has reasonable cause to believe that any explosive, or ingredient of an explosive, or substance found by him is liable to be forfeited under this Ordinance, he may seize and detain the same until a Magistrate has determined whether the same is or is not so liable to be forfeited, and with respect thereto the following provisions shall have effect— (a) the officer or constable seizing may cither require the occupier of the place in which it was seized (whether a building or not, or a vessel or vehicle) to detain the same in such place or in any place under the control of such occupier, or may remove it in such manner and to such place as will, in his opinion, least endanger the public safety and there detain it, and may, where the matter is urgent and fraught with serious public danger, if authorised in writing by the Comptroller of Customs and Excise, a Justice or an officer of Police, cause the same to be destroyed or otherwise rendered harmless; but before destroying or rendering harmless the same, he shall take and keep a sample thereof, and shall, if required, give a portion of the sample to the person owning the explosive or having the same under his control at the time of the seizure ; andany such occupier who, by himself or by any other person, fails to keep the same when he is required in pursuance of this section to detain it, and any such occupier or other person who, except with the authority of the officer or constable seizing the same, or of the Comptroller of Customs and Excise, or an officer of Police, or, in case of emergency, for the purpose of preventing explosion or fire, removes, alters, or in any way tampers or deals with the same while so detained, shall be liable to a fine of two hundred and forty dollars, and shall also be liable to forfeit all explosives and ingredients thereof which are, at the time of the 207 Seizure and detention of _explosive liable to forfeiture.