Read | LIVE: PM lays foundation stone for BPCL project in AP
"They first had an argument during the afternoon. Later again in evening after work, the trio started arguing. At one point, one of them picked up a machete and attacked the other two, killing them on the spot," the ASP added.
The attacker later surrendered in front of the police with the weapon of the crime, Saikia informed.
The deceased have been identified as Idrish Seikh (30) and Seikh Mahammad (45), both hailing from Medinipur in West Bengal.
The accused was named as Raju Gorh (36) from Pengeri in Tinsukia, Saikia said.
Read | Modi govt 'textbook case of moral bankruptcy': Rahul
"All of them were working for construction works of a private school under a contractor, who had lodged the complaint to the police. We have registered a case at Doomdooma police station," he added.
Police is interrogating the accused to find more details about the cause of the murder, Saikia said.