(AP) -- Four executives who were charged in connection with a deadly peanut salmonella outbreak pleaded not guilty on Thursday in court.

The owner of Peanut Corporation of America, Stewart Parnell and three others appeared in a federal court in southern Georgia. All four were released on bond.

The four executives were all charged in a 76-count indictment that included conspiracy and mail fraud.

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In 2009, thesalmonella outbreak killed nine people and sickened hundreds nationwide.

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