By Hyunsu Yim and Ju-min Park SEOUL (Reuters) -South Korean investigators will seek an extension of a warrant to arrest impeached President Yoon Suk Yeol, as visiting U.S. Secretary of State Antony Blinken reaffirmed confidence in the key Asian ally's handling of the political turmoil.

South Korea's anti-corruption agency said on Monday that it had asked police to take over the execution of an arrest warrant for impeached President Yoon Suk Yeol. The request comes after a failed attempt to execute an arrest warrant on Friday following a tense stand-off with presidential guards who formed a human chain to block access by the investigators.

South Korea’s anti-graft agency will seek to extend an arrest warrant for President Yoon Suk Yeol, as pressure mounted on law enforcement to resolve the country’s escalating political crisis.