An unidentified group set fire to the office of ward 10 of Melamchi municipality in Sindhupalchok. The fire which was set this morning burned important documents belonging to the office to ashes informed Inspector Mahendra Darnal of Area Police Office Melamchi. He further stated that the incident appeared suspicious as the arsonists had entered the office by cutting the padlock at the office door with a hacksaw. Police are further investigating on the incident.