Officials say at least 46 people, including 12 children, died when a bus crashed and caught fire in western Bulgaria.
The bus was registered in North Macedonia and most of those on board were tourists returning from a trip to Istanbul in Turkey.
It rammed a crash barrier on a motorway south-west of the capital Sofia at about 02:00 local time.
Seven people escaped from the bus and were taken to hospital with burns.
Four-year-old twin boys were among those killed in the crash.
Bulgarian Interior Minister Boyko Rashkov visited the “terrifying scene” and said the survivors had been badly burned.
The cause of the disaster was not immediately clear. Bulgarian officials described how the bus swerved off the motorway and tore away a 50 meters section of the crash barrier, but it was unclear if that was before or after it caught fire.