South Korea's parliament began a session on Friday where a vote to impeach acting President Han Duck-soo over short-lived martial law is scheduled, as the Constitutional Court said it would swiftly decide suspended President Yoon Suk Yeol's fate.

South Korea’s opposition-controlled National Assembly voted Friday to impeach acting President Han Duck-soo despite vehement protests by governing party lawmakers, further deepening the country’s political crisis set off by President Yoon Suk Yeol’s stunning imposition of martial law and ensuing impeachment.

The country's National Assembly already impeached and suspended President Yoon Suk Yeol earlier this month for imposing an unpopular martial law.