TikTok won a last-minute reprieve late Sunday as a US federal judge halted enforcement of a politically charged ban ordered by the Trump administration on downloads of the popular video app, hours before it was set to take effect.

District Judge Carl Nichols issued a temporary injunction at the request of TikTok, which the White House has called a national security threat stemming from its Chinese parent firm’s links to the Beijing government.

The opinion was sealed, so no reason for the decision was released in a brief order by the court in Washington.