After the gunfight, the joint forces of army and BDR divided in more than 40 groups are keeping a close watch on some 288-kilometre long Bangladesh-Myanmar border.

The government sources expressed ignorance about the identity of the miscreants who attacked the joint forces resulting in the gunfight trading more than 300 rounds of bullet. However, several local sources said they are members of an "outlawed guerrilla group of a neighbouring country".

A Bangladesh Rifles (BDR) source confirmed that there were no casualties on the government side while any casualty on the miscreants' part could not be known immediately.

The security forces' raid is on in and around Tengra Murong, yesterday's battlefield surrounded by thick forest.

The joint forces recovered 970 rounds of bullet of AK47 rifle and light machine gun, four walkie-talkies, two hand microphones, 20 sets of military uniforms, 10 monkey caps and a good number of army blankets from the spot.

An unofficial source said the guerrilla attack was in retaliation of the joint forces' continued raid in the area in one of which the forces recovered a huge cache of explosives and bullets and eight rifles, and captured guerrilla member Abul Kalam from Naikhangchhari's Tengra Murong area on July 6.

A number of such drives in the area since last September has seen the destruction of many guerrilla dens as well as recovery of about 200 modern weapons.

The Bandarban army sources said the ongoing operation was launched on Saturday night based on information provided by Abul Kalam.