India to probe railway collision that killed 9, injured dozens

India will launch an investigation on Tuesday into a train collision that killed nine people in the state of West Bengal and injured more than 50, a day after a top railway official blamed the incident on driver error.

The death toll was revised down to nine from 15 after Monday’s accident, in which a freight train rammed into a passenger train heading for the state capital of Kolkata from the northeastern state of Tripura.

The investigation by India’s top railway safety official will start on Tuesday...