The blast occurred about one-and-a-half kilometres from the Naranarayan Setu at Jugigupa at around 10.20 AM when an Army convoy was passing, sources in the Army said.
A vehicle in the convoy, which was on its way from Kokrajhar to Agia, was damaged in the explosion.
The injured jawans have been shifted to the Basistha Army Hospital in Guwahati.
Union Home Minister P Chidambaram and senior BJP leader L K Advani are currently visiting Assam to take stock of the situation in lower Assam following the minorities-Bodos violence which has claimed 56 lives.
Photos: Shah Rukh Khan, Shweta Bachchan at Karan Johar's book launch
Photos: Sunny Deol with sons Karan and Rajvir at Mumbai airport
Photos: 10 beautiful moments that capture winter around the world
Photos: Karisma Kapoor, Preity Zinta, Shraddha Kapoor at Mumbai airport
Spotted: Anushka Sharma and Diljit Dosanjh at Mumbai studio