“Of the three persons injured, one died on the way to hospital,” said LR Vishnoi, IG (law and order) of Assam Police.
Police clamped indefinite curfew from 7pm in Dhubri and the army conducted flag march in sensitive pockets of the town.
Tension had gripped Dhubri, bordering Bangladesh, in the morning following theft from a temple, which was also desecrated, on Friday night even though curfew was in place.
Protesting the theft and vandalism, thousands came out on the streets and forced shops to down shutters. Police had to fire blanks to disperse a stone-throwing mob.
Dhubri was one of the districts hit in the recent ethnic clashes in which 97 people were killed and more than 4 lakh displaced.
CRPF jawan killed in grenade attack, 11 injured
A CRPF jawan was killed and 11 including three troopers from the force were injured after a grenade attack in Guwahati on Saturday.
Two suspected militants on a motorcycle lobbed the grenade at a CRPF picket party at 7.45pm in busy Paltan Bazar area. Eight civilians were injured in the blast.