A significant outbreak of the damaging Asian longhorn beetle has been found in canton Fribourg.
The beetle attacks hardwood trees and kills them. It was first found in the country in 2011 - again in Fribourg.
Around 100 trees will need to be cut down.
The cantonal forest service will now search for further outbreaks nearby, using specially trained dogs.
A buffer zone will also be set up which means no green waste can be transported out of the infected zone.
Heat to stay for now
Growing anger over World Cup red card
Fire damages trees in the Jardin Anglais
Cows sweltering in the heat
Lake Geneva nudists fight for their lake section
Holiday makers seek more than the sun
