Shimla, Jan 28 (ANI): A major fire engulfed 110-year old historic Gorton Castle building in Shimla on Tuesday, causing extensive damage. The heritage building housed the office of the Accountant General and contained important documents and government records. Teams of the police and Army were also called on to assist fire fighters in dousing the fire. Additional district magistrate, Simla, DK Rattan, said that the building caught fire in the wee hours of January 28. No casualties were reported.