A prosecution team announced interim results of their inquiry on Sunday, according to the Korean news agency Yonhap. Choi, Park’s confidante and daughter of her late mentor, stands accused of extorting donations from local businesses to nonprofits and trying to transfer money to her firm.
Choi is also suspected of having interfered with the country’s home affairs, including correcting drafts of President Park’s public speeches.
"Based on such judgment, the special probe team will continue investigating the president," Lee Young-ryeol, the head of the Seoul Central District Prosecutors' Office, said at a press conference as quoted by the media.
The presidential office told Yonhap that the results of the probe are "very regrettable."