Burger King has dropped ABP Food Group subsidiary Silvercrest Foods – one of the processing plants implicated in the horse meat scandal – as its burger supplier.

The fast food chain said the move was a “voluntary and precautionary” measure, and reiterated there was no evidence of any food safety issues.

Silvercrest Foods is under investigation after horse DNA was found in some burgers produced for retailers. Burger Kind said last week it was confident that although Silvercrest also produced beef patties for its burgers, its products were not affected as they were made on separate production lines.

Its beef patties would now be produced by “another approved Burger King supplier”, Burger Kind added, although it did not name the supplier or specify whether it was located in the UK, Ireland or elsewhere. “We are working diligently to identify suppliers that can produce 100% pure Irish and British beef products that meet our high quality standards,” the company said.

While this process was going on, some Burger King products may become “temporarily unavailable”, Burger King said. “We apologise to our guests for any inconvenience,” it said. “However, we want to let them know that they can trust us to serve only the highest quality products.”

ABP Food Group said: “The company stated earlier this week that it is concentrating its efforts on its internal investigations and it remains entirely focussed on that task. It has previously stated that it is not commenting further, pending the conclusion of those investigations.”