Quetta, Pakistan (CNN) -- At least 35 people died in Pakistan on Saturday when a truck crashed into two passenger buses and they all erupted into flames, authorities said.
The driver of an oil transport truck was speeding and lost control in the city of Hub in Balochistan province, said provincial government spokesman Jan Muhammad Buledi.
The buses were also carrying oil on their rooftops.
"After the collision, buses and truck caught fire," Buledi said. The thick, black smoke could be seen from a distance.
Fire fighters rushed to the scene to put out the fire.
Buledi did not say how many more people were injured. They were taken to a hospital in Karachi, he said.