China said to have blocked canola shipments from Canada's Richardson International

Part of the brewing tensions between China and Canada perhaps?

According to a customs document, China has cancelled Richardson International's registration to ship canola to China; stating that "canola export registration already cancelled" in a note posted to the company.

For some context, China is the world's top canola importer while Richardson International is one the major names in agribusiness in Canada. Something looks fishy here and the timing isn't very subtle either following such headlines seen yesterday:

• China says detained Canadian citizen severely violates laws by spying, stealing intelligence