Mumbai: Shares in beleaguered Kingfisher Airlines slumped nearly 18 per cent on Friday as concerns heightened about the cash-strapped carrier's ability to raise funds to continue operations. The carrier, whose losses doubled in the September quarter due to high fuel costs, has cancelled scores of flights in recent weeks as it struggles to raise working capital. "The fresh infusion of capital in Kingfisher is still uncertain. There is nothing concrete coming from the company, except that flights still continue to be cancelled, and the market is reacting to that uncertainty," said KK Mital, chief executive for portfolio management services at Globe Capital. CNN-IBN The Financial Times reported Kingfisher Chairman Vijay Mallya said in an interview he was close to sealing a $ 370 million deal with an Indian private investor and a consortium of banks that would save the airline. Mallya said on the social networking site Twitter that the report was 'factually wrong', ...