Prosecutors are grilling Choi Soon-sil for the second day after placing her under a 48-hour emergency detention late Monday.
Wearing a mask and a black coat over her blue jail uniform, the 60-year-old suspect was transported to the prosecution's special investigation team Tuesday morning after spending the night at the detention center.
To prove allegations of tax evasion and embezzlement, the prosecution began to probe her financial transactions after requesting related information from Woori, SC Jeil and other key banks.
Prosecutors are focusing their questioning on allegations of Choi's involvement in state affairs and attempts to gain business benefits through the Mir and K-Sports foundations.
The prosecution said it will request an official warrant to detain Choi on Wednesday to put her on trial.
Source: KBS World Radio