Vienna - Austrian prosecutors said Tuesday they had ended their investigation of Joerg Haider's fatal car crash, concluding that the accident was caused by the right-wing leader, and putting to rest conspiracy theories. The head of the Alliance for the Future of Austria died on October 11 last year at the age of 58, when he drove drunk at a high speed and his car veered off the road and flipped over.

The politician's car was in "flawless condition" and no one had manipulated it, the prosecution in the town of Klagenfurt told the Austrian press agency APA after conducting a technical investigation of the vehicle.

The results of the autopsy ruled out the possibility that Haider suffered a heart attack or another illness before the accident.

After Haider's death, speculation about a possible assassination attempt appeared on right-wing internet sites and among the population of Carinthia province, where Haider was governor.

The Alliance for the Future of Austria won nearly 11 per cent of the votes in elections for parliament last September. In Carinthia, the party won 45 per cent in regional elections in March.(dpa)