The wife of South Korea’s ousted former President Yoon Suk Yeol has appeared for questioning by a special prosecutor, as investigators expanded a probe into suspicions of stock manipulation, bribery,

South Korea's ousted President Yoon Suk Yeol, who is in detention while on trial and facing various criminal probes, lay on the floor of his cell on Friday and refused to leave it for questioning, a spokesperson for a special prosecutor said.

South Korea's impeached former president Yoon Suk Yeol lay on his prison cell floor in his underwear to resist attempts to interrogate him, prosecutors said Friday. South Korea's justice minister told a parlimentary hearing that it was "frankly embarrassing for a former president to behave that way".