South Korea’s liberal-led legislature has voted overwhelmingly 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.

It is still recovering from the martial law crisis last December, when the president, Yoon Suk Yeol, tried to orchestrate a military takeover. He failed, because of resistance from the public and politicians, and was impeached, triggering this snap election to choose his successor. But the chaos Yoon unleashed that night has festered.