Updated

The Italian news agency ANSA says a 19-year-old man from Ivory Coast has stabbed a public bus driver in the Tuscan city of Siena.

ANSA said police, alerted by passengers, shot the man in the leg after he turned his attack on them, first throwing a large glass bottle at them and then attacking with a blade. The agency said the attack on Saturday afternoon began with a disagreement on the bus, but the motive was unclear.

It said the driver was in serious condition.

Police were unable to immediately confirm details of the attack.