Two boys were injured in an accident on the Plovdiv-Brezovo road.
According to preliminary data, near the village of Stryama, a car crashed into a tractor moving in front of it, driven by a 43-year-old man.
The 19-year-old driver of the car and his companion, aged 15, are hospitalized.
Both drivers - of the car and the tractor - were tested for alcohol and drugs, and the results were negative. Investigators from the Rakovski district administration continue their work to clarify the circumstances surrounding the accident.
Pre-trial proceedings are underway.