Dense fog caused serious traffic accidents on a highway near the town of Yambol on Tuesday. The highway runs from the Black Sea city of Burgas in the east to the capital, Sofia, in the west.
The accidents occurred close to each other, but in opposite lanes, according to Health Minister Katya Ivkova.
Ten people died at the scene and two more died on the way to hospital, the minister said.
Photos from the scene show overturned and crushed cars. Some of them were burnt out.
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