http://www.straitstimes.com/news/singapore/courts-crime/story/man-sentenced-jail-caning-possession-air-pistol-unexecuted-bank-ro
According to this article:
The court heard that Ng had received the air pistol from his 27-year-old brother, a regular serviceman in the Singapore Navy. His brother had brought it back from Taiwan in May 2013.
Does this mean that navy personnel training overseas are smuggling all sorts of contraband into Singapore? I wonder why there is no mention of whether any action has been taken against his brother for importing the gun.