Indonesia is blocking access to web versions of the encrypted messaging service, Telegram, citing concerns the app is being used to spread “terrorist propaganda.”

The Ministry of Communications and Information Technology issued a statement Friday, confirming that it had asked internet companies to block access to eleven addresses that the web version is available through.

The government is preparing for a total ban of the service if Telegram does not deal appropriately with unlawful content, Director General of Informatics Applications Semuel Pangerapan added.