OSAKA -- The Osaka High Court on Thursday upheld a 7 1/2-year prison term and 500 million yen fine for an Osaka-based South Korean real-estate developer for his involvement in the collapse of trading house Itoman Corp.

The court rejected an appeal filed by Heo Young Joong, a key figure in one of Japan's largest postwar cases of business fraud.

Heo, 55, immediately appealed Thursday's decision to the Supreme Court.