No action will be taken against a company accused of supplying halal burgers containing pork to city schools, the Food Standards Agency (FSA) has said.
Leicester City Council withdrew a lamb burger supplied to 19 schools by Doncaster-based Paragon Quality Foods last month after it claimed tests showed up to 50 per cent pork in a sample burger.
However, further tests of the company's products conducted by Doncaster Metropolitan Council have found no trace of pork.
A spokeswoman for the FSA said: "We were notified of the findings by Leicester City Council and instructed colleagues at Doncaster Metropolitan Council to liaise with Paragon.
"The local authority enforcement officer's role is to investigate whether any contamination has occurred and, if so, identify the possible causes and ways to prevent future occurrences.
"We have now received the report from Doncaster and are satisfied that there are appropriate controls in place and no further action needs to be taken in this instance."
Peter Dale, director of regeneration and environment at Doncaster Metropolitan Council, said: "We have carried out an extensive programme of formal sampling and so far no traces of meat other than those labelled have been detected."
Eastern Shires Purchasing Organisation (ESPO), in Leicester, which tested the original burger on behalf of the city council, declined to comment today.
Paragon bosses are now considering legal action against Leicester City Council, saying its reputation had been "unfairly damaged".
A spokesman for the company said: "The test by ESPO wasn't a formal test under controlled conditions and all other results have come back negative for any traces of pork, therefore we're seeking advice about possible legal action."
Leicester City Council was understood to be carrying out further tests on the burgers, the results of which are not yet known.
The burger had only been available on its school menus since January and was the only product supplied to the city council by the firm.
Regular tests on school food have been carried out on behalf of the council since February, when evidence of horse meat was found in beef products across the country.
The council was informed of the burger test results on April 18 and withdrew the product the following day.
All other Halal products used in the council's kitchens are supplied by another company, The Punjab Kitchen Ltd, based in Tyneside. Tests have shown they are Halal compliant.
Halal food conforms to Islamic dietary guidelines. The guidelines include forbidding Muslims from eating pork.
