Suspected extremists yesterday carried out five blasts in three eastern Assam districts morning amid heightened security for Republic Day. Police said there was no casualty and the low-intensity blasts caused minimal damage. Two of the blasts took place near a hospital and a Gurudwara in Dibrugarh town. Another blast occurred at Dujiajan in Dibrugarh district when two motorcycle-borne men lobbed a grenade. Banned United Liberation Front of Asom-Independent (ULFA-I) claimed responsibility for the blasts. The ULFA-I has exploded bombs and grenades during Republic Day and Independence Day celebrations in the past. The deadliest of these was on August 15, 2004, when 18 people were killed in north-eastern Assam’s Dhemaji town.