Law enforcement authorities have requested a warrant to formally arrest impeached South Korean President Yoon Suk Yeol, who is spending his third day at a detention center after his lawyers failed in a last-minute attempt to secure his release.

Yoon Suk Yeol became the first South Korean leader to be held by criminal investigators, ending a long standoff after he imposed martial law.

Yoon’s detention comes after a stand-off between South Korean investigators and his presidential bodyguards, who blocked earlier efforts to detain him.