At least 52 people are thought to have been killed and 10 others injured after a bus plunged into a canal in central Egypt.
State news agency MENA said the bus had been carrying around 70 passengers at the time of the accident, which occurred on the main highway between Minya and the capital Cairo.
Security sources have said they expect the death toll to rise.
One source told wire services the driver, who survived, said he had swerved to avoid an oncoming vehicle and drove the bus into the Ibrahimiya Canal, one of the largest irrigation canals in the world.
However MENA said the driver had lost control of the bus while attempting to overtake another vehicle.
Most of the dead drowned, according to one security source.
Reckless driving and poor road conditions cause many road accidents in Egypt. A series of road and rail accidents in recent years has sparked repeated public outcries over the government's record on transport safety.
The government began enforcing a new traffic code in August, but after a brief initial crackdown there appears to have been little follow-up, and streets remain chaotic.
