In Assam, a suspected insurgent group triggered a blast near the railway track in Dibrugarh last night. North East Frontier Railway Spokesperson said the blast occurred at a place between the Bhozo and Long Tatia stations, about 450 kms from Guwahati. Rail services on the Tinsukia Division resumed this morning. The spokesman of the North-East Frontier Zone Railway Division said that the track which was blown up has been repaired.