Airspace of Switzerland closed

This was announced by the Swiss agency that provides Skyguide air navigation services.
A statement from Skyguide states that the Swiss airspace was closed to traffic until further notice due to security reasons due to a technical malfunction that occurred this morning in this agency.
Skyguide said that it was working on finding a solution and that it would issue new statement when more information became available, Reuters reports.
A spokesman for the airport in Zurich said earlier that take-offs and landings were suspended, while the airport in Geneva stated on Twitter that the traffic would not continue before eight o'clock.