Security has been stepped up at the Israeli embassy in Bern and the consulate in Geneva following the weekend attacks by Hamas.
There are also extra police at Synagogues and Jewish schools.
Local police forces say they are being assisted by the Federal Police Office, but are not giving any further details.
G7 protest becomes violent
G7 summit opens today
Voters reject 10m, but accept tougher military rules
Iran/US deal set to be signed in Geneva
More Sunday shopping in Geneva
Thousands join feminist marches
