However, due to its close proximity to the border of Malaysia-Thailand, Sintok was exposed to threats from the banned communist group. Hence, the government had to migrate all the original residents to a safer area, and declared the town are as a 'black area'.
Because of its close proximity to the Malaysian-Thai border, Sintok faced threats from the outlawed communist group. Consequently, the government relocated all original inhabitants to a secure zone and declared the town a "restricted area".