Originally published 2021-11-24.
In the early hours of 23 November 2021, a coach carrying tourists home to North Macedonia struck a barrier on the Struma motorway near the village of Bosnek, south-west of Sofia, and burst into flames. Forty-five people died, twelve of them children. Only seven passengers got out, all of them by breaking through windows, and all of them badly burned. It remains one of the deadliest road accidents in modern European history.
This page explains what is known about the crash, who was on board, what the investigations found in the years that followed, and why the disaster drew renewed attention to road safety and bus licensing in the Balkans.
What happened near Bosnek
The bus was on the last leg of a weekend trip. Its passengers had spent a few days in Istanbul and were travelling overnight back to Skopje, the capital of North Macedonia, a journey that crosses Turkey and Bulgaria. Around 2:00 a.m. local time, on a stretch of motorway in Pernik Province, the vehicle hit the roadside barrier and caught fire.
Investigators were never able to say with confidence whether the fire started before the collision or as a result of it. Some survivors described being woken by a loud bang, which North Macedonia's then prime minister, Zoran Zaev, relayed to Bulgarian television after visiting them in hospital. Early accounts in the press also said the flames appeared first at the front of the bus, and that the impact happened at speed, but those details were never formally confirmed.
What is clear is how quickly the situation became hopeless. Bulgarian prosecutors later said that most of those trapped inside died from smoke inhalation rather than from the crash itself. The doors appear not to have opened, and the few people who escaped did so by smashing glass.
Who was on board
Bulgaria's national investigation service put the number on board at 52: fifty passengers and two drivers. Most were Macedonian citizens, and the large majority were ethnic Albanians from North Macedonia. Albania's foreign minister at the time, Olta Xhaçka, said almost all of the dead were ethnic Albanians.
Many of the victims were young. Families had travelled together, and British and Balkan media reported that one family of four, including four-year-old twin boys, died together. Reports also described a young woman returning from visiting her fiancé, and several pupils from the same school. These personal stories, shared by relatives in the days after the fire, turned a statistic into a national tragedy in North Macedonia, a country of fewer than two million people.
The seven survivors were five men and two women. According to the Associated Press, five were North Macedonian nationals, one was Serbian and one Belgian. All were treated for serious burns.
Why the death toll was confusing at first
In the first hours, some outlets reported 46 dead. The official figure settled at 44 confirmed deaths, then rose to 45 when the body of a child was identified several days later. The uncertainty had a simple, grim explanation: the fire was so intense that victims could not be identified visually, and DNA work took time.
There was a second complication. The coach was one of four buses travelling together, and passengers had sometimes swapped vehicles at rest stops. Bulgaria's interior minister, Boyko Rashkov, visited the scene and said it was impossible to be sure how many people had been on that particular bus. He also told reporters he had "never in my life seen something more horrifying," a line that was quoted around the world.
Investigations and court rulings
From the start, officials said human error was the most likely cause, but the story did not end with the driver. Within days, North Macedonia's transport minister, Blagoj Bočvarski, said the ministry had no record that the bus was licensed for the trip, and authorities moved to revoke the travel company's licence. The coach was registered to an agency called Besa Trans.
Two later rulings added detail:
- March 2024, North Macedonia: the owner of Besa Trans was sentenced to one year and eight months in prison for falsifying documents, fined about 800,000 denars (roughly €13,000) and banned from international transport for four years.
- January 2025, Bulgaria: the Pernik District Court found that the Road Infrastructure Agency, the body responsible for the motorway, shared part of the blame for the crash.
The second ruling matters because local officials had complained before the disaster about the road. The mayor of Pernik said the motorway was in poor condition and that accidents on that section were common.
Mourning in two countries
North Macedonia declared three days of national mourning. Flags were lowered, public events were cancelled and the country observed a minute of silence. Bulgaria held a national day of mourning on 24 November, which also honoured nine people killed in a fire at a nursing home in the village of Royak earlier that week. Bulgaria's caretaker prime minister, Stefan Yanev, called the crash a tragedy, and European Commission President Ursula von der Leyen sent condolences on behalf of the EU.
The shared grief came at a tense political moment. Bulgaria was then blocking the start of North Macedonia's EU accession talks over disputes about history and language. For a few days, leaders on both sides set those arguments aside.
Road safety lessons
The Bosnek crash put a spotlight on a problem that statistics had already shown. According to European Commission figures for 2019, Bulgaria had the second-highest road death rate in the EU. Long overnight coach journeys across several borders, sometimes run by small operators, add their own risks: tired drivers, ageing vehicles and paperwork that is hard to check across jurisdictions.
For travellers, a few practical habits reduce risk on long coach trips:
- Book with operators that can show proper licences and insurance for international routes.
- When you board, find the emergency exits, roof hatches and the hammers used to break windows.
- Wear a seatbelt if one is fitted. In a crash, staying in your seat greatly improves your chance of being able to get out afterwards.
- If smoke appears, get low and move away from it towards an exit immediately. Smoke, not flames, is what kills most people in vehicle fires.
None of this would have saved everyone on the Bosnek bus. But the survivors' escape through the windows is a reminder that knowing your way out can matter.
Common misunderstandings
"46 people died." This was an early figure. The confirmed toll was 45.
"The video of passengers boarding explains the crash." Footage of passengers boarding hours earlier circulated widely, but it shows nothing about the cause. The useful evidence came from the wreck, the road and the company's records.
"It was only the driver's fault." Human error was the main suspicion, but courts later found failings by the bus operator's owner and by the authority that maintained the motorway.
Sources: Wikipedia: 2021 Bulgaria bus crash; Associated Press via WJLA; original report: Daily Mail.
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