By Joyce Lee SEOUL (Reuters) -South Korea's leadership crisis will play out in the Constitutional Court, which will decide the fates of President Yoon Suk Yeol and Prime Minister Han Duck-soo, both impeached and suspended from power over a short-lived martial law.

In a first for the country, a court issued an arrest warrant for a former president on charges of abuse of authority and orchestrating a rebellion.

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

South Korea's acting President Choi Sang-mok said on Tuesday he would immediately move to fill vacancies on the Constitutional Court in a effort to restore stability after the impeachment of two of his predecessors this month triggered political turmoil.

Senior aides to South Korea's impeached President Yoon Suk Yeol offered to resign en masse on Wednesday, a day after his office expressed regret over acting President Choi Sang-mok's approval of two new judges to a court set to decide Yoon's fate.

A South Korean court issued an arrest warrant for embattled President Yoon Suk Yeol, who has been suspended from power over his short-lived martial law declaration, according to investigators.

SEOUL >> A South Korean court gave authorities approval on Tuesday to detain impeached President Yoon Suk Yeol in a criminal investigation into his martial law decree, marking the first time that a sitting president of the country has faced arrest.