Yoon Suk Yeol, the impeached South Korean President who appeared in a court hearing over the martial law chaos, has now been formally arrested.

With the court’s approval of the warrant, investigators can now hold him for up to 20 days, including the time he has already spent at a detention center. If convicted of insurrection, Yoon could face

Yoon’s detention, after a tense standoff outside the presidential residence, marks the latest chapter in a bewildering series of events since his martial law decree.