Yoon's impeachment deepens South Korea's political turmoil as court issues arrest warrant.

• On Tuesday, a Seoul court approved a warrant for the impeachment of South Korean President Yoon Suk Yeol, according to domestic media reports.
• Yoon is the first sitting South Korean president to face arrest.
• Authorities have the authority to detain Yoon for questioning within 48 hours under the approved warrant.

Yoon Suk Yeol, South Korea's impeached president, could be the first sitting president to face arrest after a court issued a warrant against him, according to domestic media reports.

A detention warrant was issued against Yoon by the Seoul Western District Court after he repeatedly failed to appear for questioning, despite being summoned multiple times by a joint investigation unit made up of South Korea's police and the Corruption Investigation Office for High-ranking Officials, according to Korea Times.

The CIO has the authority to detain Yoon for questioning within 48 hours under the warrant.

Yoon's legal team intends to file an injunction with the Constitution Court to halt the issuance of the warrant, as stated in a Google translation of a Yonhap report in Korean. According to the report, a legal representative for Yoon declared the warrant "unlawful and unenforceable" because investigating insurrection charges exceeded the jurisdiction of the CIO.

The Presidential Security Service has restricted access to the presidential office compound and Yoon's official residence due to security concerns, as reported by Yonhap.

According to CIO Chief Oh Dong-woon, South Korean presidents do not have immunity from insurrection or treason charges and are not allowed to obstruct a court-issued detention or arrest warrant.

On Dec. 3, Yoon declared martial law, claiming it was necessary to protect the constitution. However, the National Assembly overturned his decree six hours later, and martial law was lifted.

On Dec. 14, Yoon was impeached by lawmakers, with members of his People Power Party voting in favor of the motion. However, an earlier vote had failed to reach a two-thirds majority.

The Constitutional Court of South Korea has commenced proceedings to decide whether to remove Yoon from office or to reinstate him, as reported by Yonhap. The court will deliver its ruling within 180 days, starting from December 14.

Although Yoon is suspended from his duties and powers as president during the impeachment process, he remains in office while the Constitutional Court reviews his case.

Following Yoon's impeachment, Han Duck-soo assumed the role of president.

Last week, Han was impeached and accused by the opposition Democratic Party of being slow to appoint three justices to the Constitutional Court.

On Dec. 27, Chio Sang-mok, who is both the deputy prime minister and finance minister, assumed the role of acting president after Han's impeachment.

— CNBC's Ruxandra Iordache and Hakyung Kim contributed to this report.

An earlier version of this report incorrectly spelled the name of South Korea's president.