Passersby rushed to help after the bus crashed off the road, mangling the front of the vehicle. Volunteers crawled into the bus through broken windows, carrying the dead and injured though thick grass and up the hill to the road. The injured were taken to area hospitals.

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An investigation has been ordered into the cause of the accident, Narendar said.

“Shocked to learn about the bus accident,” President Ram Nath Kovind said in a tweet. “Thoughts with the bereaved families and those injured.”

More than 100,000 people die every year on India’s roads, often because of reckless driving, badly maintained roads and vehicles overcrowded with passengers.

Deadly bus accidents are common. In July, 48 people were killed when a bus crashed into a gorge in Uttarakhand state.