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 attended on Tuesday a Constitutional Court hearing of his impeachment trial where he denied ordering military commanders to drag lawmakers out of parliament during his short-lived bid to impose martial law.