s 30 Powers to detain transport vehicle
30.—(1) If the Director believes, on reasonable grounds, that —(a) evidential material is in or on a transport vehicle; and (b) it is necessary to exercise other powers under this Division in order to prevent the material from being removed from Singapore, or from being interfered with or to prevent its concealment, loss, deterioration or destruction, the Director may, by order, detain the vehicle for the purpose of exercising those other powers. (2) The power of the Director under subsection (1) to detain a transport vehicle includes all or any of the following powers:(a) to stop the transport vehicle from leaving Singapore; (b) to take control and possession of the transport vehicle; (c) to move the transport vehicle, or cause the transport vehicle to be moved, to a place approved by the Director. (3) An order under subsection (1) may be given orally, and if an oral direction is given to a group of individuals, it is deemed to have been given to each member of the group if the oral direction is made in a manner which is likely to be audible to all the members of the group or as many of them as reasonably practicable. (4) The Director may exercise the power under subsection (1) with such assistance of police officers, and by such force, as is necessary and reasonable. (5) However, the Director must not detain a transport vehicle under this section for longer than is necessary and reasonable to exercise any other powers under this Act.