According to the source, one of the suspects is a Belgian citizen of Turkish descent while the other is a native of Syria.
There were British, Irish, French and German passports among the confiscated papers, and all of the documents were authentic, the source added.
The investigators intend to determine how the suspects came into possession of these documents and how they were planning to use them, according to the authorities.
Earlier, US media reported citing a report by Homeland Security Investigations that Daesh (ISIL/ISIS) militants may actually possess equipment needed to print forged passports, and that some individuals using such documents may have travelled to the United States.
Other media reports also suggest that Daesh has at least 3,000 authentic Syrian and Iraqi passports stolen from the national authorities.
