Twitter has locked the account of China’s U.S. embassy for a tweet that defended China’s policies in the Xinjiang region, which the U.S. social media platform said violated the firm’s policy against “dehumanization”.

The Chinese Embassy account, @ChineseEmbinUS, posted a tweet this month that said that Uighur women were no longer “baby making machines,” citing a study reported by state-backed newspaper China Daily.

The tweet was removed by Twitter and replaced by a label stating that it was no longer available. Although Twitter hides tweets that violate its policies, it requires account owners to manually delete such posts. The Chinese embassy’s account has not posted any new tweets since Jan. 9.

Twitter’s suspension of the embassy’s account came a day after the Trump administration, in its final hours, accused China of committing genocide in Xinjiang, a finding endorsed by the incoming Biden administration.

The Biden administration did not immediately respond to a request for comment on Twitter’s move.

“We’ve taken action on the Tweet you referenced for violating our policy against dehumanization, where it states: We prohibit the dehumanization of a group of people based on their religion, caste, age, disability, serious disease, national origin, race, or ethnicity,” a Twitter spokesperson said on Thursday.

The Chinese embassy in Washington did not immediately respond to a e-mailed request for comment. Twitter is blocked in China but is an increasingly favored platform by China’s diplomats and state media.

China has repeatedly rejected accusations of abuse in its Xinjiang region, where a United Nations panel has said at least 1 million Uighurs and other Muslims had been detained in camps.Last year, a report by German researcher Adrian Zenz published by the Washington-based Jamestown Foundation think tank accused China of using forced sterilization, forced abortion and coercive family planning against minority Muslims. The Chinese foreign ministry said the allegations were groundless and false.

Twitter’s move also follows the removal of the account of former U.S. president Donald Trump, which had 88 million followers, citing the risk of violence after his supporters stormed the U.S. Capitol this month.

Twitter had locked Trump’s account, asking for deletion of some tweets, before restoring it and then removing it altogether after the former president violated the platform’s policies again.