WASHINGTON, Jan. 30 (UPI) -- The federal government has begun a criminal investigation into the Georgia peanut processing plant linked to a national salmonella outbreak.
The outbreak has sickened more than 500 people and killed eight, U.S. health officials said Friday.
The probe of Peanut Corp. of America will be carried out by the U.S. Food and Drug Administration's criminal division and the Department of Justice.
The FDA said for the first time that some peanut butter on store shelves may not be safe to eat. Health officials say major national brands were considered safe, but some smaller brands may be suspect, ABC News reported.