More recalls likely

This MSNBC story says that more pet food recalls are likely because they have located a second supplier of rice protein with melamine in their product. It may be in the human food supply, too, via animal feed:

Rice protein tainted with the chemical melamine was used in pet foods from at least five manufacturers who obtained the protein from one supplier, U.S. officials have said. It also made its way into feed used at a California hog farm.

and

Last week, privately held Wilbur-Ellis said contaminated rice protein was distributed to several pet food makers. Three of them — Natural Balance Pet Foods, the Blue Buffalo Co. and Diamond Pet Foods — have pulled some of their products.