im Young Sam, former president of the now-defunct New Democratic Korea Party, has been placed under house arrest in an apparent warning to opponents of President Chun Doo Hwan's government following a recent multi-million dollar loan scandal.

The former opposition leader is one of three Kims who had been regarded as presidential hopefuls following the assassination of President Park Chung Hee in October 1979.

The two others are Kim Dae Jung, who is serving a 20-year jail term, and Kim Jong Pil, former chairman of the government party and prime minister under Park.

Kim has been outspoken in his criticism of the Chun government despite a ban on political activities imposed on him in October 1979.

The National Assembly, meanwhile, ended five days of hearings on the loan scandal last night. Major bills put forward by opposition parties calling for the resignation of Prime Minister Yoo Chang Soon and the establishment of a special committee to investigate the affair were voted down.

In a related development, President Chun named Lee Bum Sok, a former key Chun aide, as foreign minister, replacing Lho Shin Yong, in an apparent moveto help reinvigorate South Korea's scandal-rocked economy.