The use of the web-based communication application Viber has been banned by Saudi Arabia’s telecom regulator, the reason being that it is hard for the state to monitor and deprives licensed telecom companies of revenue from international calls and texts.

“The Viber application has been suspended and the (regulator) affirms it will take appropriate action against any other applications or services if they fail to comply with regulatory requirements and rules in force in the kingdom,” the Communications and Information Technology Commission (CITC) said in a statement on its website.

Viber allows subscribers to make free calls, send instant messages and share files over the internet. CITC did not detail what regulatory requirements and rules it breached.