The accident took place on Monday at 6:20 p.m. local time (16:20 GMT) at a crossroad where a traffic light was turned off. The bus driver violated traffic rules, as he had to give way to the truck.
A photo of the damaged bus has emerged online.
The only fatality is a 29-year-old female passenger of the bus, who was thrown out of the window as a result of the crash. Another three passengers got serious injuries. The police opened an investigation against the bus driver into negligent homicide.