The Army sergeant was arrested for having in his possession the grenade which exploded in the bus injuring 19 passengers.
The Police said that the Army sergeant was remanded till March 16.
A explosion and a fire destroyed the passenger bus travelling from Jaffna to Diyatalawa while it was plying in the general area of Kahagolla, Diyatalawa last month.
Reports claimed that after reaching Bandarawela town the bus had transferred the passengers bound for Diyatalawa to another private bus before the incident took place.
Among the passengers were seven Army personnel and five Air Force personnel. The condition of two Army personnel was reportedly critical. (Colombo Gazette)