Around 30 seriously injured are undergoing treatment at the Guwahati Medical College and Hospital. Most of the injured belonged to the Bodo and Adivasi communities. Police suspect the blast to be the handiwork of the United Liberation Front of Asom (ULFA). The ULFA, however, has not so far claimed the responsibility. The bomb exploded around 1.10 pm in the busy Kumarikata weekly market in Tamulpur. The area, falling under the Bodoland Territorial Autonomous Districts (BTAD), is a bastion of Bodo militants.