The Hawks have arrested four people for visa and permit fraud and extorting money from foreign nationals. Three men and a woman were nabbed during an early morning raid in Ekurhuleni in Gauteng.
The South African Police Service (SAPS) and the Department of Home Affairs were part of the operation which saw four homes being searched.
The officials, who were acting on several tip-offs, found IDs, work permits and an illegal firearm. One man, believed to be the kingpin, was arrested in Kempton Park.
Official documents from the Home Affairs Department were also discovered.