A sweeping free trade deal being negotiated between the European Union and the United States would lower food safety and environmental standards, Greenpeace said on Monday, citing confidential documents from the talks.

But the European Commission said the documents reflected negotiating positions, not any final outcome, and the EU's chief negotiator dismissed some of Greenpeace's points as "flatly wrong."

The U.S. Trade Representative's office also rejected them. While it would not comment on the "validity of alleged leaks," a spokesman said "the interpretations being given to these texts appear to be misleading at best and flat-out wrong at worst."