He waited for the perfect opportunity and struck when the female victims were engrossed with their phones. See how the officers from Clementi Division tracked down the culprit, and stopped his crime spree. The next segment features a case of a Singaporean who was arrested for harbouring two female overstayers at his home. The Immigration & Checkpoints Authority advises homeowners to conduct due diligence checks to ensure that their tenants are not illegal immigrants or overstayers.