The man central to blocking investigators from arresting South Korea's impeached President Yoon Suk Yeol has come under the spotlight himself in the political crisis sparked by Yoon's brief declaration of martial law last month.

The one-week warrant for his detention is valid through Monday. There were no immediate indications that authorities were ready to send investigators back to the residence as of Sunday afternoon.

South Korea’s anti-corruption agency was unable to bring Yoon to custody following a standoff with the security service of the suspended president last week.