A video has emerged online, allegedly showing the road in Syria's Deir ez-Zor province where the bus containing dozens of passengers was attacked earlier on Wednesday.
The bus is seen lying by the roadside engulfed in flames, while a group of men, some of them armed and wearing military uniform, are carrying the allegedly injured people into a pick-up truck.
It is unclear whether the footage is authentic.
WARNING: The video is graphic and may offend sensibilities.