Four civilians were injured when a bomb planted by the Maoists went off at the Bankekhola area of east west highway bordering Sarlahi and Mahottrai districts on Thursday.
A press statement issued by the Ministry of Defense (MoD) said three civilians injured are undergoing treatment at Janakpur zonal hospital, while one is undergoing treatment at Birjung.
Maoists obstructed the east west highway placing obstructions in different parts of the highway leaving hundreds of passengers stranded since Thursday.
Transportation to eastern part of the country from Siraha remained stalled due to the obstruction created by the Maoists.
The statement further said one Maoist was killed in a security action carried out by the security forces in Sinchuwa area of Nawalparasi district on Thursday.
Security force recovered equipment used in making electric booby traps and some cash from the dead Maoist, the statement added.