I will fight to the end to prevent the forces and criminal groups responsible for paralyzing the country's parliament and sabotaging the nation's constitutional order, said the president in his speech broadcast on Wednesday night Swedish time.
The comments indicate that he does not plan to resign. Shortly after the speech, however, Han Dong-Hoon, leader of the ruling party PPP, which is Yoon's own party, announced that they now support the initiative to bring the president to trial.
Removing the president from his duties through impeachment is currently the only viable way to defend democracy and the republic, says Han, according to CNN.
The large opposition party, the Democratic Party, has submitted a joint motion with other opposition parties to bring Yoon to trial, announces the National Assembly. They hope to hold a vote on the issue on Saturday.
"The only viable way"
Yoon declared a state of emergency with accompanying martial law last Tuesday, but was forced to back down just six hours later. This was after the 190 lawmakers who quickly gathered in parliament unanimously voted against it.
Since then, the pressure on the president to resign has steadily increased. On Saturday, Yoon apologized, but without resigning. Later the same day, he narrowly avoided being brought to trial in parliament, as his party colleagues boycotted the vote.
On Thursday, the National Assembly voted to bring the national police chief and justice minister to trial due to last week's events.
Attempt at police raid
In addition, the police have launched a second raid on the area where the president's office is located, as part of the investigation into the state of emergency, reports the South Korean news agency Yonhap.
A similar attempt on Wednesday was stopped by security guards.
The president has been banned from traveling while the police and prosecutors investigate whether he and several other high-ranking politicians and officials attempted to stage a coup, a charge that can result in the death penalty.
Corrected: In an earlier version of the text, the wrong day of the week was stated for the police raid.