Six people died after a German-registered coach crashed on a motorway near Vienna, leaving six people dead and seven more seriously injured late Sunday, the rescue services announced.
Another 17 people were also injured in the accident happened on the A-21, near Baden, about 50 kilometres (30 miles) from the capital.
Those injured were taken to hospital in Vienna and the nearby cities of Moedling, Baden and Sankt-Poelten.
Local rescue services, including the police, fire and ambulance services were out in strength at the scene, where traffic had been brought to a halt.
First reports suggest that that the bus collided with a heavy goods vehicle before crashing into another lorry. Four of the six people killed were on board the coach.
The two lorries involved were registered in Slovakia and Romania.