The European Union and the United Kingdom on Friday hit Facebook with new antitrust probes

The European Union and the United Kingdom on Friday hit Facebook with new antitrust probes over the platform’s use of data from advertisers.

The European Commission said in a statement that it was looking into whether Facebook violated competition rules by using data gathered from advertisers to compete with them in markets where Facebook is active — particularly classified ads.

The investigation is also probing whether the platform ties its “Facebook Marketplace” service to its social network in violation of EU competition rules.

Separately, the U.K.’s Competition and Markets Authority (CMA) said it will probe whether Facebook has gained an unfair advantage over competitors in services for online classified ads and online dating through how it gathers and uses data from digital advertising services.