South Korea's main opposition party threatened on Monday to impeach acting president Han Duck-soo if he failed to approve legislation to launch a special counsel investigation into President Yoon Suk Yeol's failed bid to impose martial law.

South Korea's main opposition Democratic Party has warned acting President Han Duck-soo of impeachment if he fails to proclaim legislation to launch a special counsel investigation into impeached President Yoon Suk Yeol by Tuesday (24 December).

The party said it would ‘immediately initiate impeachment proceedings’ against the acting president if the legislation was not promulgated by Tuesday

South Korean police have questioned Prime Minister and Acting President Han Duck-soo as part of an investigation into the short-lived decision this month to impose martial law, an official at his office said on Friday.

South Korea's opposition party threatened to impeach acting president Han Duck-soo for delaying a law to investigate suspended President Yoon Suk Yeol’s alleged martial law bid.