Lawyers of impeached South Korean President Yoon Suk Yeol and the Corruption Investigation Office for High-Ranking Officials (CIO) probing his short-lived martial law decree on Dec. 3 are at odds over whether the CIO has the authority to arrest and pursue criminal charges against him.

U.S. Secretary of State Antony Blinken traveled to South Korea on Monday as an affirmation of continued support for the East Asian country as it struggles to navigate a historic constitutional crisis.

South Korea’s anti-corruption agency has requested that police take over efforts to detain impeached President Yoon Suk Yeol after its investigators failed to bring him to custody following an hours-long standoff with the presidential security service last week.