"Our focus is on ensuring that there are no contaminated products on the New Zealand market. We are working with Fonterra and its customers, to identify if there are any products posing a risk," MPI Acting Director General Scott Gallacher said.
"Our focus is on ensuring that there are no contaminated products on the New Zealand market,” Primary Industries Ministry acting director-general Scott Gallacher said.
“We are working with Fonterra and its customers to identify if there are any products posing a risk."
Fonterra told the ministry about the issue on Friday afternoon.
The ministry said it was working closely with Fonterra on “a food safety issue with a range of products manufactured from whey protein concentrate produced at a single New Zealand manufacturing site in May 2012”.
The whey concentrate appeared to contain a strain of Clostridium botulinum, which can cause botulism.
"At present, we are continuing to verify information provided to us and we will update further if any products are identified.
“Products on the market will be recalled if they are found to contain the contaminated protein."
Gallacher said the government had advised the appropriate regulatory authorities in overseas markets of the situation.
"We are also working with Fonterra to establish what has happened, how it happened and what can be done to ensure it does not happen again."