New Delhi, Pudaari News Service: An e-mail threatening to blow up the Union Home Ministry building in Delhi was sent to a senior official of the Home Ministry on Wednesday. Police personnel and security officials cordoned off the entire premises of the Home Ministry building. However, the police said that no suspicious object was found anywhere. A senior officer in the ministry's North Block received the threatening email around 3 pm. There were also rumors of a bomb in Delhi's Dwarka area.