The death toll in the blast and fire at Oil India Limited's Intermediate Tank Farm facility at Tengakhat in Dibrugarh district rose to four after Sailen Gogoi died at Aastha Hospital in Dibrugarh.
Gogoi, who had suffered 80 per cent burn injuries, had been undergoing treatment at the private hospital since Friday. He succumbed to his injuries on Saturday.
Raju Dutta, a supervisor with Spectron Engineering Pvt Ltd, died on Friday. Tapas Gogoi, 40, of Milan Nagar in Dibrugarh, died at a private nursing home in Dibrugarh, while Rupam Gohain of Chabua died at Neemcare Hospital in Guwahati on Saturday.
Dutta was a resident of Bordoloni village in Tengakhat. Spectron Engineering Pvt Ltd had been engaged by OIL.
Three other Spectron Engineering employees — Kumud Gogoi, Golap Dutta and Indrajit Gogoi — were undergoing treatment at Aastha Hospital. The explosion and subsequent fire occurred at the Intermediate Tank Farm at OIL's Oil Collecting Station in Tengakhat on Friday morning, November 6.