The crack in the Gotthard Road Tunnel that appeared on Sunday - leading to its closure - has been confirmed as caused by "redistribution of tension" within the rock above the structure.
Bern ruled out any reason linked to the ageing of the tunnel.
Part of the false ceiling had already suffered similar damage in 1985 - just five years after the tunnel opened.
Swiss Transport Minister Albert Rösti expects the tunnel to be open again by the end of the week at the latest.
Thousands of Swiss nationals stuck in middle east
Bern says it’s not able to repatriate thousands of Swiss citizens who are either resident in the middle east - or stranded as their flights have been cancelled.
Anti-war demonstrators in Geneva
Around a hundred people gathered in Geneva yesterday evening to protest the war in Iran.
Parmelin signs EU deal
Swiss President Guy Parmelin met European Commission President Ursula von der Leyen in Brussels yesterday to advance a new package of bilateral agreements between Switzerland and the EU.
Parliament moves closer to end murder loophole
Switzerland is moving closer to abolishing the 30 year statute of limitations for murder.
Water worker buried alive
A worker has died after being buried alive in canton Fribourg.
Petition for quiet cars on trains
A woman from Biel in canton Bern has launched an online petition calling for quiet carriages in second class on Swiss trains.
