A Welsh firm which produces burgers is withdrawing beef burgers which have tested positive for horse meat.
The Burger Manufacturing Company based at Powys in Wales is contacting its customers to inform them of the test results.
The UK's Food Safety Authority says tests on three samples of burgers made by the firm tested positive for “at least' 1% horse meat”.
Further tests are being carried out to establish exactly how much horse meat the products contain.
The tests will also try and determine if there is any presence of the veterinary medicine phenylbutazone, or bute.
The test which detected the equine DNA were carried out by Powys County Council, as requested by the Food Safety Authority.