A South Korean court has issued an arrest warrant for impeached, suspended President Yoon Suk Yeol, investigators said Tuesday, over his short-lived bid to impose martial law on the country. Yoon briefly suspended civilian rule this month, plunging South Korea into its worst political crisis in decades. He was stripped of his presidential duties by parliament over the action, but a constitutional court ruling is pending on whether to confirm the impeachment. “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. The conservative leader faces criminal charges of insurrection, which could result in life imprisonment or even the death penalty. Investigators probing Yoon over his declaration of martial law requested the warrant Monday after the suspended president failed to report for questioning a third time. “The reason for the warrant is that there is a concern that the individual may refuse to comply with summons without justifiable reasons, and there is sufficient probable cause to suspect the commission of a crime,” a Corruption Investigation Office (CIO) official told reporters at a briefing on Tuesday. “The warrant is valid until January 6,” the official said, adding that Yoon could be held at a police station or the Seoul detention center. Yoon’s lawyer called the arrest warrant for the impeached president “illegal and invalid”, saying investigators lacked the authority to probe the president. “The arrest warrant and search and seizure warrant issued at the request of an agency without investigative authority are illegal and invalid,” a statement sent to AFP by lawyer Yoon Kab-keun said.