Castleberry's Food Co. said late on Saturday it voluntarily expanded a recall of hot dog chili sauce and canned meat products originally announced on July 18 due to a risk of botulinum toxin, a bacterium that can cause botulism.

Botulism is a potentially fatal illness. Symptoms include dizziness, double vision, difficulty in breathing and abdominal problems.

Castleberry's said it was notified by the U.S. Food and Drug Administration (FDA) of two confirmed botulism cases and two potential botulism cases involving individuals who ate hot dog chili sauce products.

The recall by Castleberry's originally affected only 10 products, but the expanded move involves more than 80 types of stew, chili, hash and other products.

Four canned Natural Balance brand pet food products, which Castleberry's co-packs for Natural Balance, are also being recalled.

Consumers with any questions are urged to view Castleberry's Web site www.castleberrys.com. A toll-free hotline is also available at 1-800-203-4412 or 1-888-203-8446.

We believe we have isolated the issue to a situation of under-processing on one line of our production facility, said Steve Mavity, SVP Technical Services/Quality Assurance for Castleberry's, in a statement.

As an extra precaution to the recall we announced on Wednesday, we have shut down this line altogether and are recalling all products produced on it.

Recall