Traces of horse DNA have been detected in a frozen burger in a school kitchen.
Stocks of beef burgers have been removed from school kitchens across North Lanarkshire as a precaution, the council said.
The discovery was made after frozen burgers were removed for testing last week.
Samples of frozen mince came back negative for horse DNA.
A local authority spokesman said: “The council has notified the Food Standards Agency, as it is required to do, and investigations are continuing.
“Our investigations are focusing on the use of frozen burger supplies during the past three months, the maximum length of time these would be held in storage.”
Renfrewshire Council said it has removed some meat products from school kitchens and other catering premises until investigations into horse meat tests are complete.
