In Assam , as many as five persons have been wounded when a powerful bomb, planted by suspected militants, exploded at Chamber of Commerce Chariali at Tinsukia town Monday evening.The bomb, planted in a bag in front of a shop, went off at 6.15 Monday evening in the busy business area of the town.The injured have been rushed to Civil Hospital at Tinsukia.Police have suspected involvement of anti-talk group of ULFA in the blast.Security forces have cordoned off the area and a massive search operation launched to apprehend the culprits.Another unexploded bomb, weighing five kilogram, has also been recovered during search operation at Chabua in Dibrugarh district.