PARIS, July 10 (Xinhua) -- Three-member crew of a cash van were injured early Wednesday after armed individuals ambushed an armored vehicle in A43 highway near Saint-Exupery airport, in southeastern France, regional authorities said.

At 10:40 local time (0840 GMT), a cash van was attacked in A43 highway. But it "did not contain any money.." Lyon prosecutor office said in a statement.

"Three conveyors are slightly wounded and transported to hospital,"it added.

Heavily-armed robbers, on board of two vehicles, blocked the access to the cash van, forcing it to stop. They, then blew up the van's door to loot the money they supposed was inside, state-run France info radio reported.

The report added the robbers burned their two vans, before running away empty-handed on board of a car that police found torched in the near commune of Villette-d'Anthon.

Lyon prosecutor office has opened an investigation into "attempted armed robbery by organized gang and criminal conspiracy."