Shots were fired at a tourist bus on a motorway in southeast France injuring six people, according to local reports.

The bus, carrying 75 Czech tourists including some schoolchildren, was travelling from Spain to the Czech Republic when it was hit on Saturday night.

It is believed an attacker was using a hunting rifle to target the bus from a bridge over the A7 motorway near Saulce sur Rhone, about halfway between Lyon and Marseille.

Among the six people injured by broken glass was a child, said Alex Perrin, a prosecutor in the Drome region.

Two shots smashed the front and rear windows, the BBC reported. One passenger suffered a serious eye injury.

“We don’t have any reason to believe this bus was targeted instead of any other,” Perrin said.