South Korea's opposition Democratic Party on Monday urged the country's Constitutional Court to swiftly rule on President Yoon Suk Yeol's impeachment, saying keeping the country waiting is "irresponsible" and deepening social division.

South Korean President Yoon Suk Yeol, who lawmakers voted to impeach, was released from detention Saturday after spending nearly two months in custody under a criminal probe for his martial law declaration.

Thousands of South Koreans have filled the streets of downtown Seoul in massive rival rallies for and against impeached President Yoon Suk Yeol.