spotted nails on the road around Serangoon Garden Estate. According to the STOMPer, this is the fourth time someone has thrown nails on the road around the estate. Wrote Fred (Oct 15): "Nails on Chartwell/Crowhurst Drive junction. "This is the fourth time it has happened around Serangoon Garden Estate. "This person has been throwing nails all over the roads in the night. "In the last 18 months nails were thrown at Jalan Nira, Lorong Chuan, Chuan Walk and Cardiff Grove. "The length and diameter of the nail had been reduced from 60mmL/3mm Dia to 50mmL/2.5mm Dia. "My worry is when this person reduces the length to 18/25mm and more, vehicles will get their tires punctured by it. "I had spoken to the newspaper vendor doing his delivery and he complained that his motorbike tire was punctured the last time. "It's about time someone "NAILs" this person before it can get worse."