South Korea’s liberal-led legislature overwhelmingly passed bills Thursday to launch special investigations into former President Yoon Suk Yeol’s short-lived imposition of martial law in December and criminal allegations against his wife,

Opposition leader Lee Jae-myung was sworn in as South Korea’s next president on Wednesday following a dramatic snap election six months after the country’s previous leader declared martial law and plunged the nation into chaos.

South Koreans headed to the polls in record numbers on Tuesday to vote for a new president exactly six months after the botched martial law decree by impeached President Yoon Suk Yeol unleashed political turmoil.