The Federal Intelligence Service says it is monitoring the activities of 41 people who it considers a threat to the security of the country.
In a statement to the SonntagsZeitung, the service says the radical Islamic scene has been expanding in Switzerland in recent years.
It adds it believes the most likely threat is an attack by a lone individual against a weakly protected target such as a crowd or property.
But it also stresses that there is no evidence of an immediate threat at the moment.
Several injured in random knife attack
A man attacked several people with a knife yesterday afternoon in Zofingen in canton Aargau.
Push for Geneva to host song contest
Pressure is building to get canton Geneva to officially back the hosting of next year’s Eurovision Song Contest.
Govt says 'no' to song cash
As the potential cities vie for the right to host next years Eurovision Song Contest, the federal government have made it very clear – there will be no government money.
Unusual snowfalls on high passes
Despite being mid-May, the higher ground is getting a massive amount of snow.
Possible charge for Lauterbrunnen
The picturesque village of Lauterbrunnen in the Bernese Oberland is considering following the lead of Venice - and bringing in a daily charge for visitors.
Accident caused major disruption - man seriousy injured
Geneva rush hour traffic was severely disrupted yesterday afternoon after a 19-year-old scooter rider was hit by a tram in Rive.
