LOS ANGELES (MarketWatch) -- Alibaba Pictures Group Ltd. HK:1060 -0.61% , the Chinese film studio in which Alibaba Group bought a controlling interest in June, said it has turned up "certain possibly non-compliant treatment of financial information," according to a stock-exchange filing dated Thursday. The issues in question -- which took place before the Alibaba takeover, when the company was called ChinaVision Media Group Ltd. -- prompted Alibaba to call for a trading halt in the Hong Kong-listed shares and to warn that financial results for the January-June period would be delayed, pending an internal audit. The company also said its new management found "insufficient provision for impairments of certain assets" for the first half of this year, based on a preliminary review. The announcement comes just ahead of the parent company's much-awaited initial public offering in New York.