Potato chip recall upgraded to highest FDA risk level over salmonella concerns

A recall of certain Zapp's and Dirty brand potato chips has been upgraded to the FDA's most serious risk level over possible salmonella contamination.

The chips were initially recalled in May by Utz Quality Foods. The Food and Drug Administration has now classified it as a Class I recall. This means there is a reasonable probability that consuming the product could cause serious health problems or death.

Officials say anyone who has the affected chips should not eat them and should throw them away.