Anti-fraud agents on Monday inspected two French food firms at the centre of a scandal over horsemeat sold as beef in supermarkets across Europe.
The DGCCRF fraud office inspectors visited the Comigel and Spanghero plants, through which the meat passed before reaching supermarkets.
"The teams are on the company sites for checks after the horsemeat scandal erupted. They are at several sites at the moment," an official involved in the searches told AFP.
Several ranges of prepared food have been withdrawn in Britain, France and Sweden after it emerged that frozen food companies had used horsemeat instead of beef in lasagne, other pasta dishes, shepherd's pies and moussaka dishes.