Authorities at Istanbul's main airport have detained two people suspected of attempting to smuggle 148 blank European passports concealed in pizza-making equipment, Turkish government officials said.
The passports, seized at Ataturk Airport, were originals. Most were French but there were also passports from Britain, Germany and Ireland.
An official said one suspect is a Turkish-born Belgian citizen who had previously been detained over links to Kurdish rebels. The second suspect is Syrian.
The official said investigators are trying to determine how the documents were obtained and how they were intended to be used.