Melamine? Wheat gluten? Wheat flour?

Pet food probe: Who was watching suppliers
http://www.usatoday.com/money/industries/2007-05-10-pet-food-cover-usat_N.htm
China Zeroes in on Food and Drug Safety
http://www.nytimes.com/aponline/world/AP-China-Pet-Food-Recall.html
Report: Chinese exec has been detained for 2 weeks
http://www.usatoday.com/money/industries/2007-05-10-pet-food-side-usat_N.htm
http://www.cnn.com/2007/WORLD/europe/05/10/thursday/index.html
Investigation into contaminated fish feed grows
(CNN) -- Federal officials said Thursday that the industrial compound melamine, which is suspected of causing the deaths of thousands of pets nationwide, has been found in fish feed at a hatchery in Oregon and may have been sent to nearly 200 other companies.
The feed, found at Marion Forks Hatchery in Idanha, Ore., was used as a "starter diet" for juvenile salmon and trout, said Dr. David Acheson, assistant commissioner for food protection at the Food and Drug Administration.
The Oregon Department of Fish and Wildlife said it contacted the manufacturer, Skettring Co., and found that the same lot of feed was shipped to hatcheries in Willamette, Gnat Creek, Cole Rivers, Butte Falls and Leaburg, Ore.
"Hatchery managers immediately discontinued using any remaining fish feed from the lot in question and notified the FDA," the department said in a news release.
In all, Acheson said, Skettring has 198 domestic customers "that may or may not have received feed that contained the suspect lot." (Posted 5:29 p.m.)