The KOSPI, the country’s stock market, finished 1.4% lower and the Korean won was little changed against the dollar.

South Korea’s Kospi closed 1.4% lower to 2,464.00. Shares of Samsung Electronics, the country’s biggest company, fell 0.9%. Meanwhile, the country’s financial regulator said they were prepared to deploy 10 trillion won ($7.07 billion) into a stock market stabilization fund at any time, the Yonhap news agency reported.

Officials pledged “unlimited” support to markets as traders digested the implications of South Korea’s brief declaration of martial law.