In a joint operation conducted by the Police and the Immigration and Checkpoints Authority on 27 Jan 2010, a total of 84 foreign nationals of various nationalities were arrested in the forested areas along Yishun Avenue 6, which is designated a protected area. The suspects are believed to have used the cover of the forest for various illicit activities such as vice, gambling, etc.

On 27 January 2010 at 9.30pm , acting on information received, officers from Ang Mo Kio Police Division, Criminal Investigation Department, Gurkha Contingent and the Immigration and Checkpoints Authority, raided the forested areas along Yishun Avenue 6. A total of 84 foreign nationals, comprising 67 men and 17 women, of various nationalities including Thai, PRC, Indian, Bangladeshi, and Myanmese nationals, were arrested under the Protected Areas and Protected Places Act during the said operation which lasted till 4.00am the following day.

Offenders who had contravened the Protected Areas and Protected Places Act Chapter 256 may be fined $1,000 or face up to two years imprisonment or both. Investigations are currently ongoing.

Commander of Ang Mo Kio Police Division HQ, Deputy Assistant Commissioner of Police Hsu Sin Yun, praised the officers involved for a well-coordinated and successful operation and said, "We will not tolerate any form of criminal activity. Operators who think they can get away with their illicit activities by operating under the cover of forested areas are sadly mistaken. The Police will come down hard on such activities and weed them out wherever they may be."