Two people were seriously injured in a bus accident in the Lower Bavarian district of Kelheim.
The coach overturned in the morning without the participation of other vehicles, explained a police spokesman on Saturday.
Eight other inmates suffered minor injuries.
They were taken to hospitals.
At Dreieck Saalhaupt when crossing the Autobahn 93 onto Bundesstraße 15, the bus started to lurch and tilted to the left.
According to the officials, there were 37 people from the Czech Republic in the vehicle.
The coach was on its way from Italy back to Prague on Saturday morning. How the accident near Bad Abbach came about was initially unclear. The police were on site with interpreters. An expert should clarify the exact course of the accident.