Singapore called for heightened vigilance Saturday, a day after Indonesian police arrested a group of men they believed were plotting a rocket attack on the wealthy city-state with the help of a Syrian-based Islamic State militant.
The six suspected militants were rounded up Friday in dawn raids on Batam island, which is about 15 km (10 miles) south of Singapore, and local police chief Sam Budigusdian said they were still being held there while investigations continued.
Singapore's home affairs minister, K. Shanmugam, said the men had plans to hit Marina Bay, the state's glittering downtown waterfront, where nighttime Formula One Grand Prix Races are held alongside a giant Ferris wheel and a swanky casino resort.