Prevention of Terrorism No. 21 2002 23 has been obtained as required by subsection (2) and that there are reasonable grounds to believe that material information relating to (i) the commission of an offence under this Act, or (ii) the whereabouts of the person suspected by the police officer to have committed the offence, is contained in that communication or communications of that description. (4) Any information contained in a communication (a) intercepted and retained pursuant to an order under subsection (3); (b) intercepted and retained in a foreign state in accordance with the law of that foreign state and certified by a Court of that foreign state to have been so intercepted and retained, shall be admissible in proceedings for an offence under this Act, as evidence of the truth of its contents notwithstanding the fact that it contains hearsay. I 32.-(1) The Inspector General of Police may issue ,detention order in respect of an aircraft or vessel if he is of opinion, that(a) a threat has been made to commit an act of violence against the aircraft or vessel, or against any person or property on board the aircraft or vessel- or (b) an act of violence is likely to be committed against the aircraft or vessel , or against any person or property on board the aircraft or vessel. I (2) Where the operator of an aircraft or vessel fails to comply with a detention order under subsection (1), the authorised person may(a) enter, or authorise any other person to enter, the aircraft or vessel; (b) arrange for a person or thing to be removed from the aircraft or vessel, and may use reasonable force, or authorise the use of reasonable force by another person for any such purpose. (3) The authorised person shall give written notice to the operator of the aircraft or vessel of any detention order issued under this section. (4) Where the operator of an aircraft or vessel objects to a detention order, the Minister may, after hearing the interested parties, confirm, vary or cancel the order. Detention of aircraft or vessel