Police in Brazil say at least forty-one people have been killed and more than forty others injured when two buses collided in the southern state of Santa Catarina.

One of the buses burst into flames after falling into a ravine.

Several other vehicles were also involved in the accident, which police say may have been caused by heavy fog.

Almost all the victims were Argentine tourists.

The authorities say they believe the bus was speeding as it reached a curve.

From the newsroom of the BBC World Service