WASHINGTON, Jan. 18 (Yonhap) -- The United States on Saturday reiterated its "firm" support for the South Korean people and appreciated the Asian country's efforts to act in line with its Constitution, hours after a Seoul court issued a warrant to detain President Yoon Suk Yeol for an extended period over his botched martial law bid.

A Seoul court issued a warrant Saturday to detain impeached President Yoon Suk Yeol for an extended period over his botched martial law bid last month in the first such detention of a sitting South Korean president.