Two trucks collided in Switzerland's Gotthard tunnel yesterday, the world's second longest tunnel. There have been a number of tunnel disasters in recent years:
October 17th, 2001: A pig transport truck crashes into a line of cars in heavy fog near the entrance to the Guldborg Sound tunnel between the islands of Lolland and Falster, near the town of Sakskoebing, southern Denmark. Up to five people are killed.
May 28th, 2001: A truck catches fire in the tunnel leading from Turin to Bardonecchia in northwest Italy.
The truck, carrying vegetables, burst into flames and 14 people are taken to hospital suffering from smoke inhalation.
November 11th, 2000: At least 159 people are killed when fire engulfs a funicular train packed with skiers in a tunnel on Austria's 3,200-metre Kitzsteinhorn mountain.
August 8th, 2000: In Moscow, a rush-hour bomb explosion rips through an underpass leading from an underground railway station at central Pushkin Square, killing at least 13 people and injuring 90.
June 10th, 2000: At least 58 people, mostly tourists, are injured when two cog-wheeled trains collide in a single-track tunnel on the outskirts of the Alpine town of Garmisch-Partenkirchen near Germany's highest mountain, the Zugspitze.
May 29th, 1999: 12 people die in a fire following a collision involving cars and a lorry loaded with paint in the Tauern tunnel under the Alps south-east of Salzburg, trapping some 50 motorists. The Tauern is a 6.4 km tunnel between Flachau and St Michael which carries a major road between Germany and Italy.
March 24th, 1999: 39 people are killed in a fire which traps at least 30 vehicles in the tunnel under Mont Blanc, Europe's highest mountain.
November 18th, 1996: Fire breaks out in a train carrying trucks through the Channel tunnel, injuring 34 people.