Updated

Six coaches of a passenger train derailed in northern India on Saturday, killing 23 people and injuring at least 81, officials said.

Two of the coaches telescoped into each other, while four others toppled over after going off the track, said Arvind Kumar, a top official in Uttar Pradesh, the state where the derailment occurred.

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Railway police and local volunteers look for survivors in the upturned coaches of the Kalinga-Utkal Express after an accident near Khatauli, in the northern Indian state of Uttar Pradesh, Saturday, Aug. 19, 2017. Six coaches of a passenger train derailed in northern India on Saturday, killing more than 20 people and injuring dozens, officials said. (AP Photo)

Neeraj Sharma, a railway spokesman, said the incident took place near the small town of Khatauli.

The cause of the derailment was not immediately known, Sharma said.

Railway police and local volunteers helped pull passengers out of the upturned coaches of the Kalinga-Utkal Express, which connects the Hindu holy city of Haridwar with the temple town of Puri, in the eastern state of Orissa.

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A volunteer breaks the glass of a train compartment window to rescue passengers trapped after an accident near Khatauli, in the northern Indian state of Uttar Pradesh, Saturday, Aug. 19, 2017. Six coaches of a passenger train derailed in northern India on Saturday, killing more than 20 people and injuring dozens, officials said. (AP Photo)

The injured were taken to a hospital, where doctors described their condition as stable.