Shares in China's Evergrande have slumped as the crisis at the embattled property developer has deepened.
Its mainland unit Hengda Real Estate has defaulted on 4 billion yuan (£449m; $547m) of debt, it revealed on Monday.
Beijing-based news outlet Caixin has also reported that several current and former Evergrande executives have been detained by authorities.
Former chief executive Xia Haijun and an ex-finance boss Pan Darong were among those held, Caixin said.