The US Department of Justice has expanded an investigation into beef prices. Several major retailers are now under scrutiny. These retailers include well-known companies such as Walmart, Costco, and Amazon.

The full list of retailers being investigated has been released. It includes Kroger, Publix, Albertsons, Aldi, Ahold Delhaize, in addition to Walmart, Costco, and Amazon.

Further details about the investigation are available from the source. The DOJ has not provided additional information about the scope or focus of the investigation beyond the list of retailers involved.