The Ontario Ministry of Health says four people have been sickened after consuming beef tongue believed to be contaminated with listeria.

The Canadian Food Inspection Agency is recalling many brands of jellied beef tongue sold in various Ontario stores.

Many of the products were served to customers by store clerks and others were pre-packaged.

The food inspection agency says it’s conducting an investigation that may lead to more products being recalled.

It says people should check to see if they have the recalled beef tongue and either throw it out or return it to the store.

The agency says food contaminated with listeria may not look or smell spoiled but can still make people sick.