SEOUL - South Korea's opposition parties on Thursday submitted a second impeachment motion against President Yoon Suk-yeol over his martial law declaration, according to multiple media outlets.

The main liberal opposition Democratic Party and five other minor parties submitted the second motion to impeach Yoon after the first one was scrapped last Saturday as the ruling People Power Party lawmakers boycotted a vote.

The opposition bloc planned to report the motion to a plenary session of the National Assembly on Friday and put it up for a vote at 5:00 pm local time (0800 GMT) on Saturday.

Under the constitution, at least two-thirds of the 300 National Assembly lawmakers are required to vote in favor to pass an impeachment motion.

If the motion is passed, the constitutional court will deliberate it for up to 180 days, during which Yoon's presidential power will be suspended.

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Yoon declared an emergency martial law on the night of Dec 3, but it was revoked by the National Assembly hours later.

The embattled president said earlier in the day that his martial law imposition aimed to protect against the "legislative dictatorship" of the majority opposition.

Also on Thursday, the Natuonal Assembly passed bills to appoint independent counsels to investigate Yoon for insurrection over his martial law declaration and scandals involving the first lady, local media reported.

Of 283 National Assembly lawmakers attending the plenary session, 195 voted for the special prosecutor bill against Yoon and 86 dissented, with two abstentions.

Under the bill, the president is required to pick and appoint one prosecutor among those recommended.

If Yoon vetoes it, the bill should be put to a revote in which at least two-thirds of the 300-member assembly should vote for it to be passed.

Meanwhile, of 282 lawmakers participating in the vote Thursday on the special counsel bill against First Lady Kim Keon-hee, 195 were in favor and 85 were against, with two abstentions.

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Subject to the independent counsel's investigation were allegations of stock price manipulation and interference in candidate nominations for the 2022 by-elections and the 2024 parliamentary elections, as well as in public opinion manipulation during the 2022 presidential election.

The previous three bills against the first lady were vetoed by Yoon and scrapped in a revote.

The parliament on Thursday also passed impeachment motions against the justice minister and the police chief over their alleged missions in Yoon's martial law declaration, TV footage showed. 

Among 295 National Assembly lawmakers attending the plenary session, 195 were in favor of and 100 were against the motion to impeach Justice Minister Park Sung-jae.

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The motion to suspend the duty of Cho Ji-ho, the National Police Agency chief, was passed in a 202-88 vote with one abstained and four voided.

Their duties will be suspended until the constitutional court decides on whether to uphold the impeachment motion.

The opposition parties claimed that Park and Cho played roles in Yoon's martial law imposition by participating in a cabinet meeting to put the country under military rule.

In a televised address earlier in the day, Yoon defended his move to impose a short-lived martial law and showed no willingness to step down.

The president justified his declaration of emergency martial law last week as "an act of governing" that should not be "subject to legal judgment".

Yoon said that he tried to protect the country's liberal democracy and the constitutional order against the "legislative dictatorship" of the majority opposition that committed legislative violence with the majority power.

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Yoon also accused the opposition of framing insurrection charges and paralyzing state affairs with the abuse of impeachment, noting he would face impeachment or investigation "confidently".

However, Han Dong-hoon, chief of Yoon's own People Power Party, called for supporting impeachment against Yoon as its party stance, terming it as the only solution to the chaos caused by the martial law declaration.

Speaking to reporters, Han confirmed Yoon's unwillingness to resign early, and said the president should immediately be excluded from state administration, including the right to command the military.

He said those involved in the unconstitutional and illegal declaration of martial law, including Yoon, should be strongly punished.

"We must stop further confusion. There is only one effective method now," he said. "In the next (impeachment motion) vote, our party's lawmakers should enter the assembly hall and take part in the vote based on their own conviction and conscience."

The People Power Party had initially refused to back impeachment, hoping Yoon would resign from office instead. But its leadership said attempts to persuade Yoon had made no progress.