Washington: U.S. not notified in advance of Yoon's emergency martial law declaration, a White House official stated on Tuesday, expressing Washington's serious concerns over the recent developments in Korea. According to Yonhap News Agency, the United States was not forewarned about South Korean President Yoon Suk Yeol's decision to declare emergency martial law. A spokesperson for the National Security Council confirmed that the U.S. administration is in contact with the Republic of Korea (ROK) government and closely monitoring the situation as they aim to gather more information. The spokesperson reiterated, "The U.S. was not notified in advance of this announcement. We are seriously concerned by the developments we are seeing on the ground in the ROK." They underscored the gravity of the situation, highlighting ongoing diplomatic communication between the two nations. Furthermore, a U.S. administration official revealed that President Joe Biden has been briefed about the unfolding events in South Korea. This martial law declaration follows actions by the opposition Democratic Party in South Korea, which included railroading a downsized budget bill in the parliamentary budget committee and submitting impeachment motions against a state auditor and the chief prosecutor.