The EU said Thursday it has opened an antitrust probe to determine if the way Meta is rolling out AI features in WhatsApp breaches the bloc's competition rules.

In announcing the probe, the European Commission said it was concerned that a newly-announced Meta "policy may prevent third party AI providers from offering their services through WhatsApp."

The move against the US giant marks the latest move by the 27-nation EU to rein in Big Tech, in the face of strong pushback by the administration of US President Donald Trump.

It falls under the bloc's antitrust rules rather than its newly-reinforced digital laws, which Trump has accused of unfairly targeting American firms -- threatening retaliation.

EU competition chief Teresa Ribera said the bloc must "act to prevent dominant digital in

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