Police officers serving outside Singapore to remain subject to this Act
57.  Subject to section 59, a police officer or special police officer who is —
(a)temporarily attached to the forces of another territory, or otherwise serving outside Singapore, pursuant to any order made under section 56;
(b)a member of a United Nations force; or
(c)a member of any overseas operation mentioned in section 56(1)(c),
does not cease to be subject to this Act by reason only of his or her being so temporarily attached, or being such a member or outside Singapore.