At least seven navy personnel were injured in a mishap involving a kilo class Indian Navy submarine, INS Sindhuratna, off the Mumbai coast this morning.

The incident took place due to heavy smoke on INS Sindhuratna. Confirming the news, Naval Commander Rahul Sinha told AIR that seven navy personnel, who fell unconscious due to suffocation, were airlifted and admitted to a Navy hospital in Mumbai.

He said all the seven personnel are out of danger. Mr. Sinha said the reason behind the incident is not yet known. However, the smoke has been completely defused.

A Board of Inquiry under a senior officer has been ordered to ascertain the reason behind the mishap.

INS Sindhuratna, was being sea tested after a refit, about 40 to 50 km off the Mumbai coast when the smoke was detected. Since it was still in testing mode, it had not been placed under operational command yet.