A social media account for a popular Chinese e-commerce site has been blocked after it issued a post on the anniversary of the 1989 Tiananmen Square crackdown.
“Tell me loudly: what’s the date today?” the account belonging to Xiaohongshu posted to Weibo.
The post to its 14 million followers was swiftly deleted.
The page has now been replaced by a message saying it is being investigated for violations of laws and regulations.
Xiaohongshu, which is backed by Chinese internet giants Alibaba and Tencent, has yet to comment publicly on the matter.
It is unclear whether the post by Xiaohongshu – which means Little Red Book – was intended to reference the crackdown. One person familiar with the matter told the Wall Street Journal that the post had not been linked to the anniversary.
Xiaohongshu regularly poses questions in its posts and has made similar posts to mark the weekend.
The anniversary of the Tiananmen Square crackdown is highly sensitive in China, with the ruling party regularly suppressing efforts to mark the day when Chinese troops crushed pro-democracy protests in Beijing on 4 June 1989.
Estimates of the dead vary from a few hundred to several thousand.
On Friday, Hong Kong pro-democracy activist Chow Hang Tung was arrested for promoting unauthorised assembly. Ms Chow is vice chairwoman of the Hong Kong Alliance which organises annual vigils for victims of the crackdown.