Kathmandu, Feb 14: An unidentified group detonated a pressure cooker bomb at the Nepali Congress office in Hasanpur of Dhangadhi district on Friday, Feb 13 night.
According to Kantipur, walls of ground floor and stairs have been destroyed.
The Nepali Congress building was constructed just a month ago.
Similarly, a socket bomb went off at the office of the United Nations High Commissioner for Human Rights (UNHCR) in Nepalgunj.
No major loss has been reported.
Police are carrying out further investigations.