s 11 Power to examine and secure attendance, etc.
11.—(1) For the purpose of investigating any offence under section 5, the Director‑General or an authorised officer may do all or any of the following:(a) examine orally any person who appears to be acquainted with matters related to the offence; (b) require by written notice the attendance before himself or herself of any person in Singapore who, from information given or otherwise, appears to be acquainted with matters related to the offence; (c) require any person to provide any information or produce any book or document, or any copy thereof, in that person’s possession and, without payment, inspect, keep, copy or take extracts from that book, document or copy. (2) Any person examined under this section is bound to state truly what the person knows of the matters related to the offence, whether or not the provision of information or production of any book or document or other disclosure might incriminate the person. (3) A statement made by any person examined under this section must —(a) be in writing; (b) be read over to the person; (c) if the person does not understand English, be interpreted for the person in a language that the person understands; and (d) after correction, if necessary, be signed by the person. (4) If any person fails to attend as required by a notice under subsection (1)(b), the Director‑General or authorised officer may report such failure to a Magistrate, who may then issue a warrant to secure that person’s attendance as required by the notice.