The president of South Korea early Wednesday lifted the martial law he imposed on the country hours earlier, bending to political pressure after a tense night in which troops surrounded parliament and lawmakers voted to reject military rule.

President Yoon Suk Yeol, who appeared likely to be impeached over his actions, imposed martial law late Tuesday out of frustration with the opposition, vowing to eliminate “anti-state” forces as he struggles against opponents who control parliament and that he accuses of sympathizing with communist North Korea.

Police and military personnel were seen leaving the grounds of parliament following the bipartisan vote to overrule the president, and the declaration was formally lifted around 4:30 a.m. during a Cabinet meeting.

Parliament acted swiftly after martial law was imposed, with National Assembly Speaker Woo Won Shik declaring that the law was “invalid” and that lawmakers would “protect democracy with the people.”

In all, martial law was in effect for about six hours.

The president’s surprising move harkened back to an era of authoritarian leaders that the country has not seen since the 1980s, and it was immediately denounced by the opposition and the leader of Yoon’s own conservative party.