Three Democratic senators are calling on Apple

and Google

to suspend the X and Grok apps from their stores, at least until owner Elon Musk disallows them from letting users create and share nonconsensual, explicit images and depictions of child sexual abuse.

In an open letter to Apple CEO Tim Cook and Google CEO Sundar Pichai on Friday, Sens. Ron Wyden of Oregon, Ed Markey of Massachusetts and Ben Ray Lujan of New Mexico said the tech giants should, “immediately remove the X and Grok apps from their app stores until the company’s Chief Executive Officer, Elon Musk, addresses these disturbing and likely illegal activities.”

“Turning a blind eye to X’s egregious behavior would make a mockery of your moderation practices,” they wrote, adding that a failure to take action would “undermine your claims in public and in court that your app stores offer a safer user experience than letting users download apps directly to their phones.”