The embattled Gupta family own a range of business interests in South Africa, including computing, mining, air travel, energy, technology and media.
The three brothers, Atul, Rajesh and Ajay, moved to the country in 1993 from India, just as white-minority rule was ending.
They are known friends of President Zuma – and his son, daughter and one of the president’s wives worked for the family’s firms.
The brothers have been accused of wielding enormous political influence in South Africa, with critics alleging that they have tried to “capture the state” to advance their own business interests.
Former Deputy Finance Minister Mcebisi Jonas made a public allegation in 2016 that he was offered 600m Rand ($50m; £36m) by the Gupta family to be the next finance minister – as long as he did their bidding.