DIBRUGARH, Nov 10: The death toll in the fire at Oil India Limited's Intermediate Tank Farm project in Tengakhat rose to six after another worker died while undergoing treatment.

The worker, identified as Golap Dutta of Ultan Bordoloni in Tengakhat, had suffered severe burn injuries in the incident. He died at a private hospital in Dibrugarh, where he was undergoing treatment.

A powerful explosion triggered the fire at the OIL project on November 6. Preliminary information indicated that the explosion occurred in an area where crude oil was stored, leaving several workers seriously injured.

The injured workers were initially admitted to Assam Medical College and Hospital in Dibrugarh. They were employees of Mumbai-based Spectron Engineers Pvt Ltd, which was working on the project for OIL.

The injured included Shailen Gogoi, 45, Tapas Gogoi, 40, Kumud Gogoi, 38, and Indra Gogoi, 40. Tapas Gogoi and Rupam Gogoi had earlier died while undergoing treatment.

The exact cause of the explosion and subsequent fire remained unclear.