BRUSSELS: Dutch investigators arrested two suspects Thursday over Europe's widening tainted egg scandal, as Denmark announced that 20 contaminated tonnes had been sold there.
Danish food authorities said boiled and peeled eggs ? imported from a Belgian supplier ? had been found to contain traces of the fipronil insecticide that has seen millions of eggs pulled from supermarket shelves across Europe.
The eggs were mostly sold to cafes and caterers, Danish authorities said, stressing that the level of the insecticide in the eggs was too low to pose a health risk to humans.
The scandal also spread eastwards on Thursday as a tonne of contaminated egg yolk was found in Romania, and 21 boxes of the tainted eggs were discovered in Slovakia.
It also reached Luxembourg, while Britain said it had imported 700,000 eggs from Dutch farms linked to the scandal ? far more than first thought.
Sweden and Switzerland have also found contaminated eggs.
Fipronil is commonly used to get rid of fleas, lice, and ticks from animals but is banned by the European Union from use in the food industry. When eaten in large quantities it can harm people's kidneys, liver, and thyroid glands.
With questions growing about how the contamination happened and whether consumers have been kept in the dark, pressure has grown on the two countries at the centre of the scandal ? the Netherlands and Belgium.
In joint raids with Belgium, Dutch prosecutors said they had arrested "two managers at the company that allegedly used the substance at poultry farms," with Dutch media naming the suspects' firm as Chickfriend.
Farmers in the Netherlands ? one of Europe's biggest egg exporters ? and Belgium have previously identified Chickfriend as the company that they hired to treat their chickens to eradicate the parasite red lice.
'Prohibited products' seized
Dutch authorities said the raids also focused on a Belgian supplier of fipronil ? named in the media as Poultry-Vision ? and another unidentified Dutch company that allegedly colluded with it.
"They are suspected of putting public health in danger by supplying and using fipronil in pens containing egg-laying chickens," prosecutors' spokeswoman Marieke van der Molen said.
Belgian investigators meanwhile identified 26 people or companies as suspects during the 11 raids by police and food safety agency officers, for offences including fraud and breaking EU food laws.
Investigators seized paperwork, cars, banking details, and fixed assets in both countries. They said they had also seized 6,000 litres of "prohibited products" in Belgium.
The joint offensive came despite Belgium earlier accusing the Netherlands of knowing about the problem of fipronil in eggs since November 2016 but failing to inform them until July.
The Netherlands denied the charge.
Sandwiches off shelves
In Britain, four major supermarket chains have withdrawn some products containing eggs over the scandal, including sandwiches and salads, the Food Standards Agency said.
Luxembourg said eggs sold in branches of the discount supermarket Aldi had been withdrawn, with one batch containing so much fipronil it was unsafe to be eaten by young children.
The eggs at the centre of the scandal have mainly come from the Netherlands, followed by Belgium and Germany. Scores of farms have been shut.
As the probe continues into how the contamination happened, a lawyer for Poultry-Vision said the firm sold it to Chickfriend, but it has not said where it got the substance.
Dutch eggs in Slovakia
Slovak authorities said Thursday they had discovered a batch of insecticide-tainted eggs imported from The Netherlands via Germany as the scandal spread to Romania and Denmark.
The country's veterinary inspectors found 21 packages of hard-boiled and peeled eggs that were contaminated with fipronil in a warehouse of the western village of Vrbove, agriculture ministry spokeswoman Zuzana Peiger Acjakova told AFP.
Authorities in Slovakia were informed about the shipment of tainted eggs by an EU-wide rapid alert system, Acjakova said.
"Freshness is a criterion that consumers should take into account because it determines the quality of the product," Slovak Agriculture Minister Gabriela Matecna said in a statement.
"Slovak foodstuffs are under strict control of our veterinary administration from the field to the shelves," she added.
20 tonnes of contaminated eggs sold
Twenty tonnes of fipronil-contaminated eggs have been sold in Denmark, the country's Veterinary and Food Administration said on Thursday.
"The Danish company Danaeg Products has received a total of 20 tonnes of boiled and peeled eggs from a Belgian supplier. The eggs have mostly been sold to cafeterias, cafes, and catering firms, and have most probably not been sold in Danish retail stores to any large degree," the agency said, adding the eggs posed no risk to human consumption.
"Tests analysed in the Netherlands showed traces of fipronil in the eggs, but not at a level harmful to people's health. Because the contents are illegal, Danaeg Products is recalling the eggs from their customers," it added.
The administration had earlier this week said Denmark was unaffected by the tainted egg scandal spreading across Europe.
"The Veterinary and Food Administration is following the issue closely, and cannot exclude that further examination may uncover more imports of fipronil-tainted eggs or egg products to Denmark," it said.