Facebook¡¯s local servers in Vietnam were taken offline early this year, slowing local traffic to a crawl until it agreed to significantly increase the censorship of ¡°anti-state¡± posts for local users, two sources at the company said Tuesday.

The restrictions, which the sources said were carried out by state-owned telecommunications companies, knocked the servers offline for around seven weeks, meaning the website became unusable at times.

¡°We believe the action was taken to place significant pressure on us to increase our compliance with legal takedown orders when it comes to content that our users in Vietnam see,¡± the first of the two Facebook sources said.