The Department of Justice has expanded an investigation into beef prices. Several major retailers are now under investigation. These retailers include Walmart, Costco, and Amazon, among others.

The full list of retailers being investigated has been released by the DOJ. 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's expansion of the investigation is the latest development in the matter, but no additional information has been provided about the specifics of the investigation or its potential outcomes.