Yoon’s arrest could mark the beginning of a prolonged period in custody, lasting months or longer, as he faces the possibility of imprisonment on potential rebellion charges linked to his imposition of martial law on Dec.

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.

This was the second bid to arrest the impeached president, following a failed attempt on Jan.3 when agents from South Korea's Presidential Security Service had blocked investigato