A massive fire broke out at the Mantralaya building in Mumbai on Thursday. Reports of injured people are yet to be ascertained.

According to NDTV, most of the people were evacuated from the administrative building soon after the fire started in the afternoon, with the fire brigade officials rushing to the spot to put off the blaze.

Medical teams with ambulances have also reached the scene of incident.

Latest TV reports show that the building has been engulfed in heavy smoke, with fire officials attempting to rescue those still trapped inside. The blaze has reportedly spread all the way to the top floor of the building located at Nariman Point.

 It was reported that the fire may have started in NCP minister Babanrao Pachpute's office and that the urban development department that allegedly houses paperwork related to government scams may have been destroyed, thereby leading to the belief that the incident might be a "conspiracy case", NDTV news service said.

According to the Press Trust of India, the fire may have spread across the Chief Minister's office, which is on the sixth floor of the building. 

It was reportedly said that the fire may have been initiated by a short circuit in the electric mains.