Dutch police arrested two suspects on Thursday as part of an investigation into the illegal use of a potentially harmful insecticide in the poultry industry, the Dutch prosecution service said.

Millions of chicken eggs have been pulled from European supermarket shelves as a result of the scare over the use of the insecticide fipronil, and hundreds of thousands of hens may be culled in the Netherlands.

Prosecutors said in a statement they had conducted raids at eight locations in the Netherlands and Belgium, confiscating cars and seizing bank accounts and real estate.