What to know about the detention of impeached South Korean President Yoon

SEOUL, South Korea — After weeks of being holed up in a heavily guarded compound, impeached South Korean President Yoon Suk Yeol has been detained by hundreds of police and anti-corruption officials for questioning over his imposition of martial law last month.

Scuffles occurred during an earlier attempt to detain him on Jan. 3, when dozens of investigators were stopped from entering the compound by presidential security forces, military personnel and vehicle barricades.

This time, however, after negotiations between Yoon's lawyers and officials, the president was whisked away on Wednesday for questioning by the country's anti-corruption agency.

The spectacle at the compound follows Yoon's astonishing decision last month to impose martial law during a seemingly routine impasse with the opposition, which dominates the National Assembly.

Here's a closer look at the president's detention, and what might come next:

What's the latest?

The Corruption Investigation Office for High-Ranking Officials said Yoon was taken into custody about three hours after hundreds of law enforcement officers entered the residential compound. The officials didn't encounter any significant resistance.

In a video message recorded before he was taken away, Yoon said the ''rule of law has completely collapsed in this country.''

Officials are investigating whether Yoon's short-lived power grab on Dec. 3 amounted to an attempted rebellion. South Korean presidents have wide-ranging immunity from prosecution while in office, except for allegations of rebellion or treason.

What led to the standoff?

This all follows Yoon's imposition of martial law.

He argues it was a necessary act of governance against a liberal opposition that has used its legislative majority to sabotage his agenda. After declaring martial law, Yoon dispatched troops to surround the National Assembly, but lawmakers managed to get past the blockade and voted to reject it, and the Cabinet lifted his declaration a few hours later.

Parliament impeached Yoon on Dec. 14, suspending his presidential powers.

Yoon has vowed to ''fight to the end'' against efforts to oust him.

Who's in charge?

The country's acting leader is Deputy Prime Minister Choi Sang-mok.

Ahead of Yoon's detention, Choi on Wednesday urged law enforcement agencies and the presidential security service to ensure there were no ''physical clashes.''

Choi last Friday accepted the resignation of the chief of the presidential security service, Park Jong-joon, who was questioned by police about the thwarted attempt to detain Yoon on Jan. 3. Park said his duty is to protect the president and that the investigation should proceed in a manner appropriate for a president's status and the ''dignity of the nation.''

The National Assembly is controlled by the liberal opposition Democratic Party, which pushed for Yoon's impeachment. Lawmakers from Yoon's People Power Party held a rally near the presidential residence, decrying the efforts to detain him as unlawful.

Yoon's defense minister, police chief and several top military commanders have already been arrested over their roles in the period of martial law.

What happens next?

While Yoon is being questioned, officials are expected to ask a court for permission to make a formal arrest. If there's no arrest, Yoon would be released after 48 hours.

The court held its first formal hearing on the case on Tuesday, but the session lasted less than five minutes because Yoon refused to attend. The next hearing is set for Thursday, and the court will then proceed with a trial, with or without Yoon.

There is still tension in Seoul.

Yoon's supporters and critics have held competing protests near the residence — one side vowing to protect him, the other calling for his removal — while thousands of police officers in yellow jackets closely monitor the tense situation. Separated by police lines and fences, the two groups have exchanged verbal insults across the divide. One person was arrested Sunday when he waved a box cutter in a heated argument, but no one was hurt.

Yoon's lawyers have claimed that images of the impeached president being detained could trigger a backlash from his supporters and spark a ''civil war.''

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