Finance Minister Choi Sang-mok became on Friday South Korea's second acting president in two weeks, as lawmakers voted to impeach the current acting leader, Prime Minister Han Duck-soo, fuelling political uncertainty in Asia's fourth-largest economy.

South Korea's National Assembly impeached the country's acting president, Han Duck-soo, on Friday, marking the second time in December that it has chosen to remove the country's leader.

South Korea's political crisis deepened on Friday as the National Assembly voted to impeach acting President Han Duck-soo. The move comes just two weeks after President Yoon Suk Yeol was impeached following his failed attempt to impose martial law on December 3.