A court in Seoul has extended the detention of impeached President Yoon Suk Yeol, citing concerns that he may destroy evidence linked to his failed attempt to impose martial law last month. The court issued a warrant on Sunday allowing investigators to hold Yoon for an additional 20 days,

South Korea's impeached President Yoon Suk Yeol refused to appear for fresh questioning by investigators Thursday, a day after his dramatic arrest over an ill-fated martial law declaration.

South Korea looks set for a dramatic political showdown this week as impeachment proceedings kick off against suspended President Yoon Suk Yeol, who remains holed up in his fortified residence evading arrest for a separate criminal investigation.