Thailand has announced that a contract to sell more than a million tonnes of rice to China has been cancelled.
The Ministry of Commerce said the Chinese government pulled out of the the deal to buy 1.2 million tonnes of rice because of an ongoing probe.
Thailand's Anti-Corruption Commission is investigating PM Yingluck Shinawatra over a rice purchase policy.
The policy has been a factor in the anti-government protests that have sparked Thailand's political crisis.
The deal with China would have been the first stage of what the Thai government was hoping to be a larger shipment of rice this year.
"China lacks confidence to do business with us after the National Anti-Corruption Commission started investigations into the transparency of rice deals between Thailand and China," Thai Commerce Minister Niwatthamrong Bunsongphaisan said, announcing the cancellation.