Two brothers from the wealthy Gupta family have been arrested.
In South Africa, the Guptas are accused of benefiting from their close ties with former president Jacob Zuma.
South African officials say that extradition talks are happening with the United Arab Emirates.
The brothers fled South Africa after the judicial commission started investigating their involvement in corruption.
They are accused of paying bribes in order to get state contracts.
Many of the most serious corruption allegations against the Indian-born brothers focus on their relationship with Jacob Zuma, who was president of South Africa from 2009 until he was forced to step down.
The Gupta family is accused of using their close ties to Mr. Zuma to wield enormous political power across all levels of the South African government, including winning business contracts, influencing high-profile government appointments and misappropriating state funds.
The Gupta's deny any wrongdoing.
South Africa agreed to extradite the brothers to the United Arab Emirates in 2021.
It's not clear if the Guptas will return to South Africa after they were arrested, but the government hopes the agreement will lead to their return to face charges.
There is more about the Guptas.
The Zuptas is a joint term used by the Gupta family and the president.
One of Mr Zuma's wives, as well as a son and daughter, worked for Gupta-controlled companies.
Many of the companies in the Gupta portfolio profited from lucrative contracts with government departments and state-owned corporations, where public officials say they were instructed by the family to take decisions that would advance the brothers' business interests
Compliance was rewarded with money and promotion while disobedience was punished.
The ministries of finance, natural resources and public enterprises, as well as agencies responsible for tax collection and communications, are on the list.
An investigation published by the country's top judge concluded that the wealthy brothers had become embedded in the highest levels of government and the ANC.
The brothers are accused of being involved in racketeering activity through the procurement of rail, ports and infrastructure.
The authors concluded that Mr Zuma would do whatever the Guptas wanted him to do for them.
He was sentenced to 15 months in prison last year for not testifying. After two months in jail, he was released on parole.
The Guptas moved to South Africa after the fall of apartheid from India.
When Atul arrived to set up the family business, he was surprised by the lack of red tape.
More than 10,000 people are employed by the company in South Africa, as well as developing financial interests in the mining, energy, technology and media sectors.
The president met Atul Gupta when he was a guest at a function.