Anchor: Prosecutors assigned to the December 3 martial law case now have two opposition party heavyweights behind bars. Former National Intelligence Service(NIS) Director Cho Tae-yong has been placed in pretrial detention on charges of concealing former President Yoon Suk Yeol's plan, and former Prime Minister Hwang Kyo-ahn was arrested this morning on suspicion of supporting the declaration. 
Our Monica Chin has the details. 

Report: Efforts to hold former top officials accountable for the December 3 martial law imposition are intensifying, with the government’s ex spy chief, who is accused of aiding former President Yoon Suk Yeol’s declaration, having been placed in pretrial detention. 

Former National Intelligence Service(NIS) Director Cho Tae-yong was taken into custody on Wednesday at the Seoul Central District Court, which ordered his detention citing possible evidence destruction. 

The special counsel team handling the December 3 martial law case believes Cho, who led the NIS until Yoon’s impeachment in April, was aware of the former president's plan to declare martial law before the former president’s live television address, but withheld the information from the National Assembly.

The team has also accused Cho of deleting records of phone calls with Yoon and presented CCTV footage that appears to show the former director pocketing a copy of the decree during a Cabinet meeting.

Prosecutors are pursuing charges including dereliction of duty, perjury, destruction of evidence and falsification of official documents related to the declaration. Cho, for his part, has denied any wrongdoing.

The same day, the special counsel team detained and later requested a pretrial detention for former Prime Minister Hwang Kyo-ahn, whom it suspects endorsed and supported Yoon’s plans. 

Hwang, who advocated for the elimination of pro-North Korea forces and those involved in election fraud via a Facebook post on the day martial law was declared, is exercising his right to remain silent during questioning on whether he advocated for the decree.

The actions mark a major step for the prosecution, which has now succeeded in detaining three of Yoon’s former cabinet members following the arrests of former Defense Minister Kim Yong-hyun in December and former Minister of the Interior and Safety Lee Sang-min in August.
Monica Chin, KBS World Radio News.