Twitter has pulled out of the European Union's voluntary code to fight disinformation, the EU has said, EDnews reports.
Thierry Breton, who is the EU's internal market commissioner, announced the news on Twitter - but warned the firm new laws would force compliance.
"Obligations remain. You can run but you can't hide," he said.
Twitter will be legally required to fight disinformation in the EU from 25 August, he said, adding: "Our teams will be ready for enforcement."
Twitter has not confirmed its stance on the code or responded to a request for comment.