The horsemeat scandal is feared to have reached Germany after the state of North Rhine-Westphalia (NRW) warned frozen lasagne products containing horsemeat may have been mislabelled and sent to retailers.
The state's Ministry of Compliance claimed the products were delivered "on a large scale across Germany and NRW”, Die Welt reported.
It alleges the products came into Germany via a supplier in Luxembourg between November 2012 and January 2013.
Major German supermarket chain Tengelmann confirmed it is recalling supplies of its own brand frozen lasagne amid fears it may contain horsemeat, but it did not reveal who had supplied the Attraktiv und Preiswert (Attractive and Good) lasagne.
The EU is urging member states to carry out tens of thousands of tests in the wake of the horsemeat scandal - but who will foot the bill?
Romanians are smarting at accusations that abattoirs there put horsemeat into the food chain.
Poland's deputy chief veterinary officer says his investigation shows the country's meat products are "genuine beef" and alleges fraud.