Police inspections came after assailants fired two M79 grenades at a security checkpoint in Tak Bai district late last night. No one was injured in the attack as the grenades fell under a tree and at the entrance gate of a village's water supply system building.
Police collected the evidence at the crime scene for further investigation.
Meanwhile, police, soldiers and defence volunteers sets up checkpoint on main and minor roads leading to Tak Bai district to thoroughly search vehicles.
The popular restaurant “Khok Khang” in the Tak Bai municipality was closed today.
The Tak Bai incident occurred on Oct 25, 2004 when hundreds of people were arrested while protesting against the arrest of six local men. The arrested protesters were handcuffed and piled into trucks heading for an army camp in nearby Pattani province. Arriving at the camp, at least 85 of them were found to have died from suffocation.