Riverina MP Michael McCormack's name is the latest to emerge as the dual citizenship saga rolls on in Canberra.
Questions have been raised over another 18 Federal MPs, with Labor naming Mr McCormack as one of eight Liberals who have citizenship questions to answer.
Mr McCormack’s maternal grandfather was born in Greece, however, the Greek Embassy does not have him registered on Greek municipal records, a requirement of being a citizen.
The Small Business Minister has previously served as Assistant Minister for Defence and as a Parliamentary Secretary to the Minister for Finance.
Labor has also accused Liberals Julia Banks, Alex Hawke, and Arthur Sinodinos of being Greek citizens after claiming evidence provided by the Greek embassy was “unconvincing”.
Under section 44 of the constitution, dual citizens are ineligible to sit in parliament.