New Delhi: The Anil Ambani-led Reliance Naval & Engineering Ltd ( RNEL ) has filed a complaint with the defence ministry against a senior naval officer, alleging that he has been favouring its competitor, Larsen & Toubro, in a contract because his son is employed there. The complaint, on which an internal inquiry is now on, has stalled a Rs 20,000-crore ‘ Make in India ’ naval warship deal. The allegations include ‘favouritism and supplying of insider information’.The contract to make four amphibious warships in India has been hanging fire since last year when L&T and RNEL were shortlisted by the defence ministry.ET has learnt the RNEL complaint specifically states that the son of the top Navy officer works with L&T’s defence division.The officer concerned, a vice-admiral, has also sent across his views on the matter after the defence ministry began a probe, officials told ET. In response to queries by ET, a spokesman for RNEL said: “Yes, we have filed an official complaint in the matter.” He declined to go into details.When contacted, L&T officials denied the allegations. “Our company does not engage in such acts and the organisation’s ethos does not permit engaging in anything against our value system,” said a top L&T official. The Navy did not offer any comment.The two companies have been fighting a bitter battle for the mega contract that can turn around the fortunes of the victorious shipyard.The landing platform docks (LPDs), used to transport troops and equipment such as tanks and attack helicopters across sea, would be the largest warship to be built in an Indian private sector shipyard.While RNEL had tied up with the French Naval Group for the contract, L&T’s technology partner is Spain’s Navantia Group. All four ships are to be built at an Indian yard with the help of a foreign partner who will chip in with design and technology.The companies were shortlisted in 2017, but the next step in the procurement process — opening of commercial bids and determining the winner — has now been stalled.Earlier, the selection process rejected a bid by ABG Shipyard, which is facing bankruptcy proceedings.Concerns have been expressed recently after the report of an internal auditor raised doubts on RNEL’s ability to “continue as a going concern” due to current liabilities and loans being called back by lenders.Meanwhile, a May 31 news report by PTI said independent auditors had raised doubts on L&T’s shipbuilding arm continuing as a ‘going concern’ due to liabilities after multiple years of losses.“The company’s current liabilities exceeds its current assets as at the balance sheet date. These conditions indicate the existence of material uncertainty that may cast significant doubt about the company’s ability to continue as a going concern,” Sharp & Tannan, the auditors, said in the FY17 balance sheet.The Indian warship-building sector has suffered considerable strain over the past five years with few orders trickling to the private sector.Almost all major contracts have gone to public sector shipyards that are currently saddled with orders beyond their building capacity.