The IRB second battalion Assistant Commandant Kiran Tamang was critically injured after being hit by a 'khukri' (sharp-edged weapon) during the clash, IRB sources said.
He was taken to the hospital where he died, they said.
GJM leader Binay Tamang claimed that two of his party workers were killed when the police opened fire at a GJM procession here.
ADG (law and order) Anuj Sharma, however, denied the allegation and said the police did not open fire.
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