Public Protector, Busisiwe Mkhwebane, has agreed to investigate Public Enterprises Minister, Lynn Browne, for her alleged breach of the Executive Members' Ethics Code.
This followed a request from DA MP, Natasha Mazzone.
According to a letter from the Public Protector's office, the inquiry is being addressed by Godwin Kock, a senior investigator in the Good Governance and Integrity Unit.
Mazzone said Friday that Minister Brown seemingly failed to divulge if there had been contracts of engagement between Eskom and the Gupta-linked Trillian, in a written reply to a parliamentary question.
However, she said the so-called Gupta emails had revealed that Eskom, at the time of the reply, had already been invoiced by the either Trillian or one of its subsidiaries for more than 250 million rand.
"AmaBhungane has now, however, established that Eskom had, at the time of the reply, already been invoiced by the either Trillian or one of its subsidiaries for more than R250 million," Mazzone said.
"These findings were also confirmed in an explosive report released yesterday, which established that Eskom had indeed paid Trillian R260 million for work it never did. This report provides further proof of the Minister's apparent breach of the Ethic's Code".
"The Public Protector's investigation is an indictment of how the Guptas have completely captured Eskom," said Mazzone.