Maoists detonated a bomb at the Survey Office in the eastern town of Biratnagar Saturday night.
Parts of the office building, located near Koshi Zonal Hospital, were destroyed in the blast that occurred at around 11:00 p.m., reports said. No human casualty was reported in the incident as nobody was inside the building.
The rebels have carried out series of bombings in government installations in Biratnagar and other eastern towns since last few days.