Warehouses containing pyrotechnics caught fire in the capital region of Bulgaria.
At least two people have already been injured in the incident.
The Bulgarian National Television reported this on its official website.

According to media reports, the fire engulfed three warehouses where pyrotechnics were stored. They are located in the area between the town of Elin Pelin and the village of the same name in the Sofia region.
Rescuers managed to pull out two people - a man and a woman. Two more people are considered missing, their search continues.
It is noted that the injured woman received serious injuries as a result of the incident.
Explosions are constantly being heard, said Interior Ministry spokesman Dimitar Kangaldzhiev.
The air above the capital Sofia is full of smoke. Roads are closed, but the airport continues to operate normally. Local residents have all been evacuated.
Bulgarian Interior Minister Kalin Stoyanov quickly arrived at the scene.