On 17 June 1968, to mark the 20th anniversary of their armed struggle against the Malaysian Government, the Communist Party of Malaya (CPM) launched an ambush against security forces in the area of Kroh–Betong road not far between Pengkalan Hulu town and Malaysia-Thailand border.
On 17 June 1968, marking a significant milestone in their armed campaign against the Malaysian Government, the Communist Party of Malaya (CPM) launched an attack on security forces in the Kroh–Betong road area, near Pengkalan Hulu town and the Malaysia-Thailand border.