The FDA has expanded its recall of frozen shrimp over potential radioactive contamination, now affecting more U.S. states.

The primary health concern associated with Cesium-137 is an elevated risk of cancer due to DNA damage from long-term, repeated low-dose exposure. Consumers who have purchased the recalled frozen shrimp are advised not to consume it and to dispose of it or return it to the place of purchase for a full refund, the FDA said.

FDA expands frozen shrimp recall to nine states, including California; consumers urged to check bags and not eat listed products.