South Korea's arrested President Yoon Suk Yeol did not attend a second day of questioning by investigators on Thursday, further stonewalling a criminal probe into whether he committed insurrection with his bid to impose martial law.

South Korea's impeached President Yoon Suk Yeol refused to appear for fresh questioning by investigators Thursday, a day after his dramatic arrest over an ill-fated martial law declaration.

Yoon said he's cooperating to avert "bloodshed" but invoked his right to remain silent and his lawyers are using "every legal tactic" in the book, analysts say, against the insurrection probe into his ill-fated declaration of martial law.