Fonterra Co-operative Group has suspended a distribution agreement with China's Jiawai after Shanghai food safety officials and police announced the arrest of 19 people suspected of repackaging expired milk powder from New Zealand.
Jiawai had been an authorised distributor in China for Fonterra since March but the product was believed to have been onsold by a former Jiawai employee before any contact with the NZ company, Fonterra said.
The product had been in the resale market, having been sold over and over, and until the investigation was complete it wasn't possible to say where the distribution chain had descended into criminality, the company said.
A spokeswoman said Fonterra is being "hyper-vigilant" given the sensitivities around new rules for food safety in China.
In words attributed to Teh-Han Cho, president NZMP, Greater China, the company said it believed the arrests stemmed from "an isolated criminal incident" and it was satisfied that Chinese authorities had acted quickly to arrest those involved.