A long-awaited antitrust case against Amazon’s massive online retail operations is expected to be filed in federal court as soon as Tuesday, according to three people with knowledge of the matter.

The Federal Trade Commission has been preparing a complaint since at least the start of this year targeting an array of Amazon’s business practices. The exact details of the lawsuit are not known, and changes to the final complaint are possible until it’s officially submitted. But personnel throughout the agency, including FTC Chair Lina Khan herself, have homed in on several of Amazon’s business practices, POLITICO has previously reported. READ MORE