Chinese regulators have accused Evergrande and its founder of inflating revenues by $78 billion, putting the insolvent property developer at the heart of the country’s biggest ever financial fraud case.

The China Securities Regulatory Commission (CSRC) slapped a penalty of 4.175 billion yuan ($580 million) on Hengda Real Estate, the group’s main Chinese unit, the company said in filings to the Shenzhen Stock Exchange on Monday.

Xu Jiayin, founder and chairman of the Evergrande Group, was fined 47 million yuan ($6.5 million) for the overstatement and other alleged violations. Formerly China’s richest man, he was also barred from the securities markets for life.