The first event occurred at 01.50.
The stone had shattered the windshield and ended up inside the cab.
According to the police, the driver received a wound in the head, but had been able to get home himself when the police were alerted.
About fifteen minutes later, an alarm came about another stone-throwing.
Here, too, a truck had its window smashed.
The driver was taken by ambulance to hospital with shrapnel wounds to the face and chest pain.
The police classify both cases as aggravated assault.