The locomotive of the Kamrup Express was damaged in an explosion triggered by tribal Karbi militants at Khakhati in Assam's Karbi Anglong district at around 1.30 pm on Tuesday. However, over 400 passengers traveling in the train escaped unscathed as the impact of the explosion was not felt

in the coaches.

The police suspect that tribal militants active in the Karbi Anglong hill district masterminded the explosion.  A North-east Frontier Railway spokesman informed that the damaged locomotive of the passenger train was replaced and the train continued its journey towards Tinsukia in Eastern Assam