Two of the injured in the serious train accident on Wednesday remain in serious condition. They are admitted to the capital's hospitals "St. Anna" and ISUL. A blood donation campaign has also been organized for the two men, BNT reports.
The head-on collision between a diesel and an electric train occurred in the section between the Svetovrachene and Kremikovtsi stations near Sofia.
A total of six people were injured in the incident, and two died. The remaining four injured have minor injuries and after examinations at the Military Medical Academy and "Pirogov" were released.
The investigation must show whether technical or human error created the prerequisites for the head-on collision.
The owner of the private freight company said that he had repeatedly warned about irregularities.
The causes of the tragedy are still being clarified, but experts link them to a lack of investment and underfunding of railway transport.