Home Affairs Minister Dr Leon Schreiber says more than 2,000 fraudulently obtained study visas will be cancelled following an SIU investigation as government intensifies efforts to strengthen immigration controls and border security.

Home Affairs Minister Dr Leon Schreiber says the department will cancel more than 2,000 fraudulently obtained study visas following a major Special Investigating Unit (SIU) investigation that analysed more than a billion data points as government intensifies efforts to clamp down on immigration fraud and strengthen border security.

Speaking during an Inter-Ministerial Committee (IMC) media briefing on Sunday, Schreiber said the visa cancellations formed part of a broader reform agenda aimed at improving immigration enforcement, securing identity systems and preventing abuses of South Africa's immigration framework.

"The work from the SIU has actually made massive progress in this regard," Schreiber said.

"We're talking about thousands upon thousands of visas. I think we were looking at over a billion data points that were analysed by the SIU in terms of its work."