Apple Inc. and Google removed TikTok from their mobile app stores in the US as required by a law that took effect Sunday, after the social media company’s legal challenges failed to head off the measure passed last year to address national security concerns.

Amid the TikTok shutdown, in a rare move, Apple published a statement and a support document listing all affected apps that are inaccessible in the U.S.

TIKTOK has shut down in the US for 170 million users as the federal ban came into force. App users who tried logging on were simply met with a message telling them they could no longer use the