South Korea's acting President Choi Sang-mok vowed to continue trilateral cooperation with Japan and the United States, saying on Friday his country's diplomacy remains steadfast despite an unprecedented political crisis at home.

STORY: South Korea's acting President Choi Sang-mok held an emergency meeting in Seoul on Sunday to discuss the country’s deadliest air disaster, just two days into his new job.:: Muan, South Korea “As the acting 'head of the government' responsible for the safety and lives of our residents,

The impeachment of South Korea’s acting President Han Duck-soo has plunged the country into further political turmoil, coming less than two weeks after lawmakers impeached President Yoon Suk Yeol.

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 vote was the second major impeachment in two weeks after President Yoon’s ill-fated martial law bid set off turmoil. The country’s currency has plunged.

South Korea's police have been asked to arrest suspended president Yoon Suk Yeol, the Yonhap news agency reported on Monday. Dozens of investigators working for the Corruption Investigation Office for High-ranking Officials (CIO) attempted to execute a court warrant for Yoon's detention on Friday after he ignored three summonses for questioning over his botched attempt to impose martial law on December 3.

Lee Jae-myung, leader of the Democratic Party of Korea, criticized Acting President Choi Sang-mok, blaming him for the anti-corruption agency’s failure to arrest impeached President Yoon Suk-yeol. “Acting President Choi Sang-mok should be held accountable for disrupting order and acts of insurrection.