Tyson Foods announced it had little information on the reasons for Russia's ban on pork from its Columbus Junction and Waterloo plants in Iowa, adding that it would leave it to the U.S. Department of Agriculture to resolve the issue, according to a Reuters report.

Russian officials said the ban was imposed due to E.coli infection found in the meat. The embargo was imposed on June 6.

Gary Mickelson, Tyson spokesperson, said the company was confident its pork products were completely safe and that all operations were federally inspected.

Pork from a Brazilian and Paraguay plant, as well as horse meat from an Argentina plant, was also banned by Russia due apparent E.coli contamination.