OTTAWA—A voluntary recall has been issued for all Toxic Waste brand Nuclear Sludge Chew Bars, imported from Pakistan.

The recall was announced by the Canadian Food Inspection Agency late Friday.

It says testing by the California Department of Public Health indicated some cherry flavoured bars might contain elevated levels of lead that could cause health problems, particularly for infants, small children, and pregnant women.

The agency says the products, imported by Indiana-based Candy Dynamics, may have been distributed nationally in Canada.

No illnesses have been reported to date in connection with the bars.

The agency is working with the importers to have the affected products removed from the marketplace.