OTTAWA, Ontario – E. coli was found at a Cargill beef processing plant in High River, Alberta, according to a CBC News report. No recall was made because none of the affected product left the plant.

The Canadian Food Inspection Agency has launched an investigation to find the source of contamination. A routine food safety testing at the facility detected naturally and randomly occurring E. coli O157: H7 bacteria in a portion of beef trim production, according to the company. No ground beef products were affected.

Cargill’s practice is hold tested product until results are known, said Mike Martin, Cargill spokesman. In this case, the food safety measures in place at High River worked as designed. The company said it is cooperating with the CFIA investigation.

"Cargill is confident that its rigorous, proven and industry leading, food safety program at High River will continue to minimize the potential for human health risks from naturally and randomly occurring bacteria that are ubiquitous throughout the environment," he added.

Cargill invested C$42-million ($41 million) to modernize the High River plant with new technology to improve efficiency and food safety.