"We have issued directions for closure of the coke unit of Sesa Goa," Levinsons Martins of the Goa State Control Pollution Board told Reuters.

The board has also called for a report from an environment ministry department on air and land pollution to be delivered in 7 days, the official said.

Shares of Sesa Goa extended losses by 3.73 percent at 180.45 rupees per share on output worries as a result of the requested closure.