The presidential office voiced regret Tuesday after acting President Choi Sang-mok appointed two justices to the Constitutional Court, saying he has gone beyond his authority as the interim leader by going ahead with the appointments.

South Korea's acting President Choi Sang-mok said on Tuesday he would immediately move to fill vacancies on the Constitutional Court in a effort to restore stability after the impeachment of two of his predecessors this month triggered political turmoil.

South Korea's acting President Choi Sang-mok seeks to fill vacancies in the Constitutional Court, aiming to restore stability following political upheavals. Choi, who became acting leader after the impeachment of Prime Minister Han Duck-soo,

South Korean Acting President Choi Sang-mok called for national harmony and unity and for trust in the government in a New Year's address on Tuesday, amid an unprecedented political crisis sparked by impeached President Yoon Suk Yeol's short-lived martial law declaration.

The police are investigating whether President Yoon Suk Yeol tried to lead an insurrection when he declared martial law and plunged the country into crisis.

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.

The turnover at the top of Asia’s fourth-largest economy left the government scrambling when Jeju Air flight 7C2216 slammed into a wall at Muan International Airport on Sunday

A South Korean court gave authorities approval on Tuesday to detain impeached President Yoon Suk Yeol in a criminal investigation into his martial law decree, marking the first time that a sitting president of the country has faced arrest.