By bizn_fun 
Ofcom will now examine whether X has failed to take down illegal content quickly when it became aware of it, and taken “appropriate steps” to prevent people in the UK from seeing it.
It said such illegal content included “non-consensual intimate images” and child sexual imagery.
It will also check whether X has used “highly effective age assurance” measures to stop children from seeing pornographic images.
The decision follows global backlash over Grok’s image creation feature, with both Malaysia and Indonesia temporarily blocking access to the tool over the weekend.
An Ofcom spokesperson did not give an indication on how long the investigation would take but said it would be a “matter of the highest priority”.
“Platforms must protect people in the UK from content that’s illegal in the UK,” they said.
“We won’t hesitate to investigate where we suspect companies are failing in their duties, especially where there’s a risk of harm to children.”
Lorna Woods, professor of internet law at Essex University, told the BBC it was “hard to predict” how quickly the investigation would move.
“Ofcom has a degree of choice in how fast – or slow – they take the investigation,” she said.
She said the regulator could apply for a business disruption order – a court order to block access to X in the UK – straight away rather than as a last resort, but only in “rare circumstances” in response to an ongoing problem.