It is not possible to access the authority Försvarets radioanstalts, FRA's website on Saturday morning, which Expressen was the first to report.

The problems are confirmed by Ola Billger, communications manager at FRA, for SVT.

- We are working and troubleshooting.

I do not want to speculate what the cause is at the moment, he says.

Open the site is affected

Only the open website has been affected, says Ola Billger.

- The open site is of course separate from our other operations, so this does not affect our operations as an intelligence service.

When is the site expected to be available again?

- I do not want to speculate about that before we know exactly what is behind it, says Ola Billger.

Problems on other sites

FRA is under the Ministry of Defense and has the right to conduct signal reconnaissance.

Last week, there were also problems with the Swedish Civil Contingencies Agency's website.