France's anti-fraud office and the Paris prosecutor are also conducting investigations.

WSJ: Nestl�� Pulls Products After Horse Traces Found

The French anti-fraud office has begun investigating the complex Europe-wide chain of instructions for ordering ready-meals from Comigel, which links France, Luxembourg, Cyprus, the Netherlands and Romania.

BBC: UK

On Tuesday, the European Commission announced Mr Dalli's resignation, saying that the EU's anti-fraud office (Olaf) had established that a Maltese businessman had tried to use his contacts with Mr Dalli for financial gain.

BBC: EU's Dalli insists on innocence in tobacco scandal