The operation, launched by West Karbi Anglong Superintendent of Police N N Goswami, was going on since the last three days after the underground group sent extortion letters with bullet shells to various people demanding money and threatening death if they failed to pay, police sources said.
The four insurgents were apprehended in a village under Baithlangsu police station area with one AK-56 rifle and a magazine, 19 live ammunition, 22 electric detonators and 66 metres of fuse wires, the sources said.
The KLRA was formed recently by the surrendered cadre of the local ethnic United Peoples Democratic Solidarity (UPDS) and Karbi National Liberation Front (KNLF), the sources added.