French police discovered a massive haul of cannabis resin in a van on the A40 autoroute, close to the Geneva border.
Police had targeted the van earlier as they felt the driver was acting suspiciously.
When it had stopped in a rest area police arrested the driver and searched the van. They found half a tonne of cannabis resin packed into 15 suitcases.
The 30-year-old man is now in pre-trial custody. He told police he had been told to drop off the drugs in Annemasse.
Your pictures of the eclipse
You sent in your pictures of the eclipse - many thanks
Copernicus reports hottest summer ever measured
Switzerland is in the grip of a level 3 heat alert, with Geneva heading for temperatures of up to 36°C on Friday.
Tough new banking rules possible
The Federal Council has launched consultations on new banking rules that could withhold or claw back bonuses from top banking executives.
Speed crackdown affects all of Switzerland
The Federal Council has tightened the rules for imposing 30 km/h zones on city streets, requiring cantons to prove that a slowdown will not push traffic into residential neighbourhoods
Back to school concern over heat
Vaud is preparing to map every school building in the canton to identify the classrooms most vulnerable to extreme heat
Eye warning for eclipse watchers
Anyone who watched Wednesday's solar eclipse without proper glasses should watch for signs of retinal damage, doctors are warning
