At least 12 people were killed in a motorway crash in southeastern Bulgaria.^[1] Pile-ups occurred on both sides of the motorway near Yambol.^[2] An estimated 50 cars and trucks were involved.^[3] The crash was on the route from Sofia to Burgas.^[4] The cause Thick fog was present at the site.^[5] Fog is the suspected cause.^[6] The counts The total of 12 is agreed. How it divides is not. Al Jazeera reported that 10 people died at the site and two on the way to hospital.^[7] RTÉ reported 11 dead at the scene and one later in hospital.^[8] The injured are given as 46 taken to medical facilities in one report and 50 in the other.^[9][10] The response The motorway was closed in both directions.^[11] The government sent two medical aircraft to the area.^[12] Prime Minister Rumen Radev cancelled his later official events that day.^[13] Bulgaria will hold a national day of mourning.^[14] Ursula von der Leyen, the president of the European Commission, cut short her visit to the country.^[15] The record Bulgaria recorded 71 road deaths per million inhabitants in 2025.^[16] That is the highest road fatality rate in the European Union.^[17] The motorways of southeastern Bulgaria are ranked among the most dangerous in the bloc.^[18]