Romanian prime minister Victor Ponta has said the horsemeat allegations against his country do not represent a "public safety issue" but a "fraud" that "must be punished".
He said he did not want Romanian producer's credibility damaged.
Mr Ponta said his country must not be suspects because they are on the Eastern frontier of Europe. He said it was important to be clear and erase any suspicion.
Describing himself as "very angry", he said his administration will fight to find out who is guilty outside of his country.
But he refused to say whether the real guilt for the horsemeat scandal lay in the nation of his accusers, France, because, he said, a guilty man points to someone else.
The EU is urging member states to carry out tens of thousands of tests in the wake of the horsemeat scandal - but who will foot the bill?
Romanians are smarting at accusations that abattoirs there put horsemeat into the food chain.
Poland's deputy chief veterinary officer says his investigation shows the country's meat products are "genuine beef" and alleges fraud.