By Eric Vandenbroeck and co-workers

Police used ladders to climb over barricades made of buses to get into the residence and enable prosecutors to speak directly to Yoon, who was impeached last month after making a brief but botched attempt to impose martial law and exert political control.

Prosecutors had a warrant for Yoon’s arrest, which a Seoul court issued after the president ignored three summonses to appear for questioning over whether his actions amounted to insurrection. Yoon’s presidential security detail offered little resistance on Wednesday, in sharp contrast to an earlier attempt to detain him.

“I decided to cooperate with the summons order despite its illegality … this does not mean I view the warrant as valid,” Yoon said in a video message released shortly after he was detained. He said he had decided to surrender himself because of the potential for bloodshed as police and his presidential security service faced off.

Local television stations showed a convoy of black SUVs leaving the presidential residence, transporting Yoon to the headquarters of the Corruption Investigation Office for High-Ranking Officials (CIO), which is leading the probe into Yoon’s Dec. 3 attempt to impose martial law.

The CIO said its prosecutors have started working through their 200 pages of questions for the impeached president. But Yoon, who is accompanied by a lawyer, has so far refused to provide any answers, a CIO representative said on condition of anonymity at a press briefing Wednesday afternoon.

Yoon is set to be held in a detention center near the CIO headquarters while the questioning continues. Prosecutors have 48 hours to formally arrest or release the president.

Police officers patrol in front of the presidential residence as anti-corruption investigators and police prepare to execute a warrant to arrest impeached South Korean President Yoon Suk Yeol.

Here is what is known about his arrest so far:

 

Who Are the Investigators?

The CIO is leading a joint investigation team involving the police and Defence Ministry seeking charges of insurrection and abuse of power against Yoon, among others, while prosecutors carry out their probe.

The CIO was launched in January 2021 as an independent anti-graft agency to investigate high-ranking officials, including the president, and their family members as part of efforts to keep prosecutors in check.

But its investigating and prosecuting rights are limited. It does not have the authority to prosecute the president and is required to refer the case to the prosecutors’ office to take any action, including indictment, once the questioning is over.

 

What is Yoon’s Argument?

Yoon said on Jan 15 that he submitted himself for questioning to avoid any bloodshed despite what he called the illegality of the investigation and arrest.

His lawyers have said that the CIO does not have the authority to handle his case as the law stipulates a wide-ranging list of high-ranking officials and violations it can investigate, but has no mention of insurrection.

Prosecutors capable of investigating insurrection charges have been carrying out a separate investigation into Yoon.

The lawyers also said that an arrest warrant granted by a Seoul district court was unconstitutional because it specified that the warrant was exempt from two clauses of the Criminal Procedure Act that limit the seizure and search of a place subject to confidential military information, or a public official possessing official secrets, without providing legal grounds.

They said that any criminal investigation should be conducted after the Constitutional Court holds a trial on  Yoon’s impeachment and decides whether to remove him from office permanently.

Yoon’s team has filed a complaint and an injunction with the Constitutional Court to review the warrant’s legitimacy, though the Seoul Western District Court, which issued the warrant, has rejected a similar complaint.

On Jan 3, the Presidential Security Service (PSS) and military guards blocked CIO investigators from arresting Yoon in a six-hour stand-off. The PSS’ then chief, Park Chong-jun, had said that the security service could not cooperate on the warrant, citing the legal debate over the CIO’s investigative rights and the warrant’s validity.

The CIO has said it has secured the right to take on Yoon’s case by obtaining the arrest warrant, and the two clauses of the Criminal Procedure Act do not apply because the warrant was limited to arresting him, not seizing his possessions.

But the agency has apologized for initially failing to arrest Yoon and requested that the police take over the execution of the warrant, based on its consideration that “such a serious case as this one should not leave even the slightest possibility of controversy”.

Police have acknowledged that there was a legal dispute over such a transfer but said they would consult the CIO.

The CIO and the police held multiple meetings to discuss how to execute the warrant after securing a re-issued warrant on Jan 7.

Yoon’s legal adviser, Seok Dong-hyeon, said the bid to transfer the execution of the warrant is effectively an admission by the CIO that its probe and the warrant are “illegal”.

 

What Do the Courts Say?

The Constitutional Court said on Jan 13 that it is reviewing the complaint and injunction filed by Yoon’s lawyers.

The Seoul Western District Court, which previously dismissed a similar complaint, said it is not illegal for the CIO to handle Yoon’s case as allegations of insurrection are included in abuse of power charges covered by the agency.

It also said the warrant’s exemption from the two Criminal Procedure Act clauses appears to confirm that any search that might entail was aimed at arresting the defendant, not seizing his belongings, and it was not unconstitutional for a judge to specify that when approving a warrant.

Yoon’s lawyers criticized the court’s statement as “sophistry” and said they would consider appealing against the decision before a higher court.

 

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