Reported by the BBC
India's defence minister has said there have been deaths on board an Indian submarine that caught fire after an explosion in a Mumbai dockyard.
AK Antony said he felt "sad about those navy personnel who lost their lives". Earlier reports said at least 18 sailors were feared trapped.
The blast on the INS Sindhurakshak took place after midnight and firefighters spent four hours putting out the fire.
Officials said the diesel-powered vessel was badly damaged.
It remains partly submerged at its berth.