Ex-President Park Geun-hye will attend a court hearing to review an arrest warrant on Thursday, her lawyers told prosecutors on Tuesday. Park is expected to show up at 10:30 a.m. to state her case in court.
She has been charged with bribery, abuse of power, extortion and leaking government secrets.
Korea has allowed a suspect to state his or her case on an arrest warrant since 1997.
Prosecutors believe they have submitted ample evidence that could lead to Park's detention and plan to stress that independent counsel Park Young-soo's probe of the Cheong Wa Dae scandal already revealed clear violations of the law.
"We have plenty of damaging evidence, including notes taken by [ex-presidential secretary] An Chong-bum, mobile phone recordings by [ex-presidential aide] Jeong Ho-seong and accounts by other suspects," a prosecution source said.
But one lawyer who used to be a prosecutor warned, "If the arrest warrant is rejected, the entire prosecution could receive a huge blow."
The ousted president's lawyers have cut off all contact with reporters. Six out of Park's nine lawyers turned their mobile phones off or refused to answer calls.
But they are expected to stress their claim that there is no risk of Park destroying evidence.
Meanwhile, around 250 Park supporters gathered in front of her house in Samseong-dong in southern Seoul on Tuesday calling on the court to reject the warrant.
Supporters of former President Park Geun-hye rally in front of her house in Samsong-dong in southern Seoul on Tuesday.