—(1) Subject to subsection (2), every person, whether a citizen of Singapore or a non-citizen, who is arriving in Singapore (by air, sea or land) from a place outside Singapore, or is leaving Singapore (by air, sea or land) to a place outside Singapore, shall present to an immigration officer at the authorised airport, authorised landing place, authorised train checkpoint, authorised point of entry, authorised departing place or authorised point of departure, as the case may be —
if the person is a citizen of Singapore (whether or not the person is also the national of a country other than Singapore) — the person’s Singapore passport that is valid, and any other prescribed evidence of the person’s identity and Singapore citizenship; or
if the person is a non-citizen —
the person’s foreign passport or other foreign travel document that is valid, and such other evidence of the person’s identity as the immigration officer may require; and
(2) The immigration officer may waive —
the requirements of a passport or travel document if the person is a citizen of Singapore and in prescribed circumstances; or
the requirements of a passport, travel document or Singapore visa in the case of any person entering Singapore from a place outside Singapore and holding a valid entry permit, re-entry permit or certificate of status issued in accordance with this Act.
(3) Any person who enters or leaves Singapore in contravention of subsection (1) shall be guilty of an offence and shall be liable on conviction to a fine not exceeding $1,000 or to imprisonment for a term not exceeding 6 months or to both.