U.S. company sues China's HNA over deal, cites opaque ownership

NEW YORK, Dec 11 (Reuters) - Ness Technologies S.A.R.L., a U.S. software engineering company, has sued Chinese conglomerate HNA Group accusing it of failing to adequately answer questions about its ownership in a U.S. review of takeovers by foreign companies, thereby causing their $325 million deal to fail.