Supermarket chain Aldi is removing all eggs from sale at its stores in Germany.
This as a precaution as a health scare over possible insecticide contamination spreads.
A number of supermarket chains have taken Dutch eggs off their shelves, but Aldi is the first to stop all sales, regardless of origin.
Aldi has more than 4,000 stores in Germany.
The company says imported eggs at its 190 stores in Switzerland have also been taken off the shelves.
Eggs thought to be affected have already been withdrawn from sale in the Netherlands.
Traces of the insecticide fipronil have been found in eggs in Belgium and the Netherlands, also leading to the shutdown of some poultry farms.
Fiprinol is considered by experts to be moderately toxic, with high doses causing nausea and dizziness.
Very large doses can cause organ damage, especially the kidneys and liver.
German authorities have stressed the chances of a health risk are low, saying the situation is “under control”.
It is thought the insecticide got into eggs via contaminated detergent used to kill mites.
Investigations into possible criminal charges have been launched in Belgium and the Netherlands.