Dear Mr shuigao,

We refer to your query dated 28 September 2015.

2. Passengers who have a valid reason not to board their flight after entering the transit area are to inform the airlines and the immigration officer at the arrival immigration. Police will then assess based on the reason provided. However, passengers who were found to have conducted any activity which may be deemed as an act of misuse of the boarding pass while in transit area, will be subjected to police investigation and may be liable for an offence under the Protected Areas and Protected Places Act.