Toxic rice causes concern in China
23 May 2013 Last updated at 09:41 BST
A number of rice mills in the Chinese province of Hunan have been been closed down after dangerous levels of cadmium were found in samples, according to reports,
Meanwhile, some rice products have been recalled and others impounded.
It is the latest in a string of food scares on the mainland and has created a fresh wave of public concern, as John Sudworth reports.