It emerged on Monday that President Jacob Zuma and State Security Minister Siyabonga Cwele ignored warnings two years ago that the Gupta family was a threat to national security.
Eyewitness News revealed on Tuesday last week how nearly 200 Gupta wedding guests on board a privately chartered jet made an unauthorised landing at the Waterkloof Air Force Base.
Several government, air force and police officials were suspended, while nine Tshwane metro police officers were arrested for links to the scandal.
The Daily Maverick reported on Monday that it was a fallout over the Guptas that led to the resignation of three of the country's most senior intelligence officials.
It is understood that former head of the State Security Agency Gibson Njenje ordered an investigation into the Gupta family's inappropriate influence in the country's top political leaders and senior government officials two years ago.
The Daily Maverick reported that the probe was supported by Foreign Intelligence head Mo Shaik and State Security Director-General Jeff Maqetuka, all close allies of Zuma.
Despite warnings that the Gupta family was a threat to state security, Cwele apparently ordered that the investigation be halted.
The three officials resigned following the fall-out with Cwele.