A bus overcrowded with Hindu pilgrims skidded into a ditch in eastern India, killing 13 passengers including two children and leaving 43 injured.

Police are searching Saturday for the driver and his assistant who fled the scene, some 100 kilometers (60 miles) north of West Bengal's state capital of Kolkata.

Superintendent Kunal Agarwal says initial reports suggest the driver was drunk and traveling at high speed when he tried to take a steep turn Friday morning and crashed.

Police say the 54-seater bus was so full that some passengers were sitting on the roof. They were traveling from Burdwan to a Hindu temple in Mayapur, where they planned to offer prayers to the Hindu god Krisha and swim in the Ganges River.