The FDA classified a November recall over potential salmonella contamination for eggs sold at Costco at its highest risk level.

The Food and Drug Administration escalated its recent recall of eggs sold at Costco to the highest alert level, citing possible salmonella exposure. In November, Costco recalled nearly 260,000 eggs sold under the Kirkland Signature brand in 25 stores nationwide.

The FDA has issued the highest-level recall of eggs sold at Costco. The alert came after around 10,800 units of the eggs were sold at 25 Costco locations in five states

The U.S. Food and Drug Administration warned that eating the contaminated eggs will likely result in "serious adverse health consequences or death."