SEOUL: South Korean suspended President Yoon Suk Yeol refused a summons to appear for questioning on Sunday, the third time he has defied investigators' demands in two weeks.At 10am on

South Korea's acting president faces an impeachment vote on Friday, intensifying a political crisis as the Constitutional Court meets for its first hearing on suspended President Yoon Suk Yeol's short-lived martial law.

The plane crash is the first major test for South Korea’s acting president, Choi Sang-mok, who had been appointed the interim leader only on Friday, as the country grapples with a political crisis at the highest levels.