North Korea's state media on Friday reported on President Yoon Suk Yeol's detention for an investigation into his short-lived imposition of martial law and the accelerating impeachment trial against him.

He has been incarcerated for the past week, while investigators probe his botched attempt to impose martial law in early December.

South Korean President Yoon Suk Yeol appeared in a Seoul court for his impeachment trial Tuesday, defending his short-lived martial law bid and denying charges that he ordered the military to drag lawmakers away.