An Indian navy officer has been killed in a gas leak on a warship undergoing trials, the latest in a string of accidents to have hit the fleet in recent months.
The Indian Express newspaper said the officer was killed on Friday following a malfunction in the carbon dioxide unit of the ship in Mumbai in India's western coast.
Some reports suggested the officer died after a gas cylinder exploded.
A spate of accidents over the past seven months have put a question mark over the Indian navy.
On February 26, the navy chief, Admiral D K Joshi quit after two officers died battling a fire on board the submarine, INS Sindhuratna.
In August last year, an explosion inside another submarine, INS Sindhurakshak, killed 18 sailors.
In 2011, a frigate sank after colliding with a merchant vessel.