The knife, measuring 19.5cm-long with a 12cm blade, was detected after the man was instructed to remove his shoes before passing through the screening lane.

The knife, measuring 19.5cm-long with a 12cm blade, was detected after the man was instructed to remove his shoes before passing through the screening lane.

A 32-year-old Indonesian man was found concealing a knife in his shoe at the centralized screening area of Terminal 4's departure hall at Singapore's Changi Airport.