Twitter retroactively added its new fact-check label to China’s foreign ministry spokesman’s tweets about the origin of the coronavirus.

The social media platform has made headlines in recent days for fact-checking a tweet from President Trump, which prompted a coming executive order on social media censorship, and recently slapped a similar alert on March 12 tweets from China Foreign Ministry spokesman Zhao Lijian speculating that the U.S. military could be responsible for spreading the virus in China.