New Delhi, Apr 26 (ANI): Massive fire engulfed the Natural History Museum in the national capital which broke out in the early hours of Tuesday. Fire broke out on the sixth floor of the museum is located near the Federation of Indian Chambers of Commerce and Industry (FICCI) auditorium. The massive inferno also engulfed parts of the FICCI building. Fire Officer Rajesh Panwar said faulty fire safety mechanisms led to the massive fire. More than 25 fire-tenders rushed to the spot to douse the flames. Flames were still seen billowing out from building's top floor hours after fire broke out.