A sight-seeing flypast over Pretoria by a jet privately chartered for Gupta wedding guests may have disrupted scheduled flights at OR Tambo International Airport in Johannesburg.
Last week, Eyewitness News broke the story that a plane carrying over 200 passengers landed at the Waterkloof Air Force Base in Pretoria without following normal procedures.
The guests were attending the Gupta family wedding at Sun City in the North West.
Officials from the International Relations Department, the Police Ministry and the Air Force were suspended for their part in the debacle.
Plane tracking data showed that the Gupta wedding guests had a sightseeing flight over the capital city before landing at the Pretoria base.
The Jet Airways plane approached Pretoria from the east over Bronkhorstspruit before heading north.
It then banked left and performed a tight loop over the capital city before heading south to start its final approach to the runway.
Government gave itself until the end of this week to conclude an investigation into the matter.
The ANC on Tuesday said measures should be put in place to ensure that the country's national key points were never abused again.
The ruling party said the motivation behind the authorisation of the Gupta plane landing would provide many answers.
ANC spokesperson Jackson Mthembu said many lessons would be learnt once investigations are complete.
According to a report in the Mail&Guardian, documents showed that officials at the South African National Defence Force (SANDF) headquarters knew about the landing.
The documents also indicated that the entire process was authorised. The report added that senior defence officials were involved in the debacle.
It also raised more questions about whether the Indian High Commission's Virendra Gupta lied to South African officials to "piggyback" the guests on diplomatic privileges.
It is understood the commission submitted a request to use the base for an incoming delegation visit. This meant it indicated that it wanted the facility for official use, not a private party.
Documents further revealed that the commission's defence attaché sought assistance from central government ministers for the landing and departure.
On the clearance document, a South African official stated that parking and landing fees would not apply.
The Indian High Commission planned to host a press conference on Thursday.