South Korean opposition parties introduced a bill Thursday calling for an independent investigation into impeached President Yoon Suk Yeol’s brief martial law declaration, as thousands of his supporters and critics held tense rallies near his residence ahead of his potential detention.

It was unclear when and how police could make the arrest and whether the presidential security service, which has blocked access by investigators with a search warrant to Yoon's office and official residence,

A prolonged period of uncertainty over the fate of impeached South Korean President Yoon Suk Yeol and the botched attempt to arrest him are giving oxygen to his backers and reviving support for his troubled party.