Italy puzzles over what caused deadly bus plunge near Venice

The cause of a tourist bus crash near Venice that killed 21 people and injured 15 others remains a mystery, the mayor of the Italian lagoon city said on Wednesday. The bus broke through a barrier, plunged 15 metres off a bridge and exploded in flames. The vehicle had been carrying tourists from the historic centre of Venice to a campsite in nearby Marghera on Tuesday evening. Those killed included three Germans, nine Ukrainians, four Romanians, two Portuguese, a Croatian and a South African, all of whom had been riding on the bus, according to the local government. Also among the 21 fatalities...