Three low intensity grenade blasts, with no casualty or injury, rocked the town since yesterday evening on the eve of the signing of an agreement between the government and the Dima Halam Daoga outfit at New Delhi today.
The district administration imposed indefinite curfew since 1:00 am in the town as a precautionary measure, police sources said.
There has been no report of any untoward incident. Security has been tightened throughout the district, the sources added.