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.

Source: Al Jazeera