A South Korean court has approved an arrest warrant for President Yoon Suk Yeol, who has been impeached and suspended from power over his decision to impose martial law on 3 December, investigating authorities said.

The Corruption Investigation Office for High-ranking Officials (CIO) confirmed the Seoul Western District Court approved the warrant requested by investigators examining Yoon’s short-lived imposition of martial law.

“The arrest warrant and search warrant for President Yoon Suk Yeol, requested by the Joint Investigation Headquarters, were issued this morning,” the Joint Investigation Headquarters said in a statement.

“No schedule has been set for future proceedings,” it added.

This is the first arrest warrant issued for an incumbent president in South Korea, according to local media.

The CIO did not comment on the court’s reasoning for granting the arrest warrant. The court declined to comment.

It was unclear when or how the arrest warrant for Yoon will be carried out. South Korea’s presidential security service said in a statement on Tuesday that it will treat the arrest warrant according to due process. The court also approved a search warrant for Yoon’s residence, the CIO said.

Under South Korean law, locations potentially linked to military secrets cannot be seized or searched without the consent of the person in charge, and it’s unlikely that Yoon will voluntarily leave his residence if he faces detainment.

Police were deployed early on Tuesday outside Yoon’s residence in central Seoul, in a likely bid to head off scuffles.

Yoon’s supporters and protesters calling for his removal have both staked out his residence, with local media running images of altercations between the two camps overnight.

Previously, police have tried but failed to successfully raid the presidential office as part of the investigation, due to the presidential security service blocking access.

Local media reported than an imminent arrest or search of the presidential residence was unlikely, as investigators would probably seek to coordinate with the presidential security service.

Yoon is facing a criminal investigation into claims of insurrection. Insurrection is one of the few charges for which a South Korean president does not have immunity.

The acting leader of South Korea’s ruling People Power Party, Kweon Seong-dong, said on Tuesday that attempting to detain a sitting president is inappropriate, according to Yonhap news agency.

On Monday, South Korean law enforcement officials requested the warrant. They plan to question Yoon on allegations of abuse of authority and orchestrating a rebellion.

Yoon’s presidential powers were suspended after the National Assembly voted to impeach him on 14 December over his imposition of martial law that lasted only hours but has triggered weeks of political turmoil, halted high-level diplomacy and rattled financial markets. A constitutional court ruling is pending on whether to confirm the impeachment.

With Reuters and Agence France-Presse