Acting President Choi Sang-mok reaffirmed his neutrality on Tuesday, resisting political pressure from the Democratic Party (DP) as it moves to prosecute him over the failure to arrest impeached President Yoon Suk Yeol.

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.

Investigators failed to take Yoon Suk Yeol into custody following a standoff with the presidential security service last week.

The president was suspended from his duties last month following a failed bid to impose martial law and his subsequent impeachment by parliament on December 14. Law enforcement authorities are seeking Yoon’s arrest as part of an investigation into alleged treason and abuse of power.

Both supporters and protesters staged rallies near the residence of South Korea's impeached President Yoon Suk-yeol on Sunday, a day before an arrest warrant for him expires. On the day, conservative groups supporting Yoon and labor groups which hold opposing views called on the public to gather outside the presidential residence.

South Korean investigators on Saturday again asked the country’s acting president to clear the way for the arrest of impeached President Yoon Suk Yeol after a six-hour standoff earlier this week thwarted his detainment.