If you recall, earlier this year on January 14, Sze Kai Xuan posted this message on social media: 'Today is the day everyone, cherish it before I bomb city hall.' As his post caught on like wildfire, alarmed members of the public alerted the police and officers were dispatched to conduct checks and carry out foot patrols at numerous MRT stations. Many officers even had to put aside their original shift work, which affected their daily patrol schedules.