Tribal activists killed a teenager and seriously injured two others and set their vehicle ablaze on Monday morning as the 36-hour Assam bandh called by the All Assam Advisai Students Association began.
Operations were on Friday intensified against NDFB-S militants along the border with Arunachal Pradesh even as the death toll in the massacre rose to 81.
The situation was on Saturday peaceful along the Assam-Nagaland border in Golaghat district, where 11 people have died so far, but nearly 10,000 people have fled their homes to take shelter in relief camps.