SEOUL - South Korea's former first lady, Kim Keon Hee, appeared on Tuesday in court, where a judge will decide whether to approve a special prosecutor's request for a warrant to arrest her on accusations of graft.

If detained, she would be South Korea's only former first lady to be arrested, joining her husband, ex-President Yoon Suk Yeol, in jail as he faces trial, following his ouster in April, over a botched bid to impose martial law in December.

Kim, wearing a black suit, bowed as she arrived, but did not answer reporters' questions or make a statement.

The charges against her, punishable by years in prison, range from stock fraud to bribery and illegal influence peddling that have implicated business owners, religious figures and a political power broker.

She has been accused of breaking the law over an incident in which she wore a luxury Van Cleef pendant reportedly worth more than 60 million won ($43,000) while attending a NATO summit with her husband in 2022.

The item was not listed in the couple's financial disclosure as required by law, according to the charge.

Kim is also accused of receiving two Chanel bags together valued at 20 million won and a diamond necklace from a religious group as a bribe in return for influence favourable to its business interests.

Kim's lawyers have denied the accusations against her and dismissed as groundless speculation news reports about some of the gifts she allegedly received.

The court is expected to announce its decision late on Tuesday or overnight, media said, based on the timing of the decision to arrest Yoon.

Yoon is on trial on charges of insurrection, which could result in life imprisonment or even the death penalty.

The former president, who also faces charges of abuse of power among others, has denied wrongdoing and refused to attend trial hearings or be questioned by prosecutors. REUTERS