A Texas food processing plant has been shut down after officials say it was contaminated by deadly bacteria.
The matter is under investigation by the Food and Drug Administration. At the heart of the investigation, chopped celery at Sangar Produce and Processing Plant.
State health officials say their lab tests show chopped celery was contaminated with listeria. Of the 10 reported illnesses, six are linked to the San Antonio plant. Four of those people died.
The state has recalled all products shipped since January. Primarily the sealed packages were shipped to Texas restaurants, hospitals and schools.
Officials say there is no indication any of the product was shipped out of state.