South Korean opposition lawmakers said Thursday they would vote this weekend on the impeachment of President Yoon Suk Yeol, who is under police investigation following his short-lived declaration of martial law.

Yoon accused his opposition of “anti-state” activities as he declared martial law on Tuesday to ban political activities and seize state control of the media. However, martial law was only in effect for about six hours as the National Assembly voted to overturn the president’s decision.

The shocking move sparked protests and alarmed South Korea’s international allies, including the United States. Yoon’s defense minister, who recommended the drastic measure, has resigned, Reuters reported.

A spokesman for South Korea’s opposition Democratic Party told reporters that parliament would vote on Yoon’s impeachment around 7 p.m. local time on Saturday. The Democratic Party has the majority in the country’s parliament.

SOUTH KOREAN LEADER faces increasing calls to resign or be removed from office over martial law

“The Yoon Suk Yeol regime’s declaration of a state of emergency of martial law has caused great confusion and fear among our people,” Democratic Party lawmaker Kim Seung-won previously told the National Assembly, according to Reuters.

Impeachment proceedings against the president would require the approval of two-thirds of the 300 members of Parliament, or 200 votes. The Democratic Party and other small opposition parties together have 192 seats. However, 18 lawmakers from Yoon’s ruling People Power Party voted against the president’s decision as Parliament rejected Yoon’s declaration of martial law by a vote of 190-0.

People Power Party Chairman Han Dong-hun criticized Yoon’s declaration of martial law as “unconstitutional.” However, the party has said it will oppose impeachment.

If Yoon is charged, he will no longer have his constitutional powers until the Constitutional Court can decide his fate. Prime Minister Han Duck-soo, the South Korean government’s deputy, would assume his duties as president.

SOUTH KOREAN PRESIDENT lifts martial law after lawmakers reject move

With his political future uncertain, Yoon accepted Defense Minister Kim Yong-hyun’s resignation on Thursday. Kim had suggested the president declare martial law because his domestic political plans had been thwarted in the opposition-controlled National Assembly.

Kim is currently being investigated by the Seoul Central District Prosecutor’s Office over possible charges of treason, South Korea’s Yonhap News Agency reported. The former defense official is banned from traveling.

According to Yonhap, police are also investigating Yoon for treason after activists and a minority opposition party filed complaints against the president.

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The lawsuits accused not only Yoon and Kim, but also Army Chief of Staff Gen. Park An-su and Interior Minister Lee Sang-min of treason and other related charges over their roles in declaring martial law on Tuesday.

Yoon is under pressure to resign ahead of Saturday’s impeachment vote.

On Wednesday, Secretary of State Antony Blinken told Reuters the United States had not been informed of Yoon’s statement in advance, while his deputy, Kurt Campbell, said Yoon had completely misjudged it.

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As a legacy of the Korean War from 1950 to 1953, the United States stationed 28,500 military personnel in South Korea.

Yoon’s declaration of martial law was the first of its kind in more than 40 years. Scenes of military intervention have not been seen since South Korea achieved true democracy in the late 1980s.

Fox News Digital’s Landon Mion and Reuters contributed to this report.