Twelve people were killed and at least 10 injured when a Polish tourist bus overturned on a highway in eastern Hungary early Sunday. The bus veered off the road into a ditch and tipped over near the town of Mezokeresztes, according to Hungarian Prime Minister Peter Magyar and police.

Hungarian police stated that preliminary information suggests the driver may have fallen asleep at the wheel. The bus was traveling on the M3 motorway towards Nyiregyhaza when the accident occurred.

According to state news agency MTI, there were 57 passengers and two drivers on board. Images from the scene showed a damaged red bus on its side in a ditch, with smashed windows and scattered belongings.

Polish President Karol Nawrocki expressed his sorrow over the