South Korea's President Yoon Suk Yeol faces a new and potentially more robust attempt to arrest him on insurrection charges after a top investigator vowed to do whatever it takes to break a security blockade and take in the impeached leader.

Impeached South Korean President Yoon Suk Yeol remained defiantly inside his residence resisting arrest for a third day on Thursday, after vowing to "fight" authorities seeking to question him over his failed martial law bid.