Tinsukia Superintendent of Police Debojit Deori told this newspaper that it is not clear if the persons died by inhaling a toxic gas, as claimed by the fellow labourers, or due to other reasons.
Following the gas leakage, the workers present in the unit complained of giddiness and other complications.
The committee headed by pollution board principal secretary Vijaya Kumar visited the M1 block where the leak was reported and launched an investigation to find causes for the leak.
At a review meeting, Jagan directed the setting up of a high-level committee to probe the gas leak, identify the cause and initiate steps to plug such incidents in the future.
Two months ago a similar incident happened at the same plant. Again, similar symptoms were reported among workers.
District police chief Gautami Shali said the gas leak was noticed around 6.45 pm. "More than 2,000 women were working in the afternoon shift that would have ended at 10 pm," she said.
It may be noted that there are about eight factories near the Krishnapatnam Port. Such incidents have made the local populace worry about their safety.
The district collector announced an ex-gratia of Rs 20,000 each as immediate assistance and appealed to the villagers not to risk their lives by entering the well.
Three people died after inhaling poisonous gas in a water tank in Thirumullaivoyal on Friday.