At least 207 people were killed and 900 injured in a collision between two passenger trains in the state of Odisha in India, according to The Times of India..

This is the deadliest rail accident in the country in ten years.. Death toll could rise, officials say.

The collision occurred at approximately 19:00 local time (13:30 GMT) 137 miles southwest of Calcutta. According to preliminary information, the Bangalore-Kolkata passenger train partially derailed after colliding with another passenger train.. Some of the cars ended up on adjacent tracks, after which a freight train crashed into them, en route from Calcutta to Chennai..

The causes of the accident are being established..

500 police officers and rescuers arrived with more than 200 ambulances and buses to eliminate the consequences of the accident and save people.

Rescue work continues at the scene, and "

Despite government efforts to improve rail safety, Indian Railways, the world's largest single-management train network, has several hundred accidents each year..

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In November 2016, more than 100 people died when 14 carriages of a passenger train derailed in northern India..

The following November, at least 39 people died and 50 were seriously injured when a train derailed in the southern state of Andhra Pradesh..

In August 1995, two trains collided near New Delhi, killing 358 people, making it the worst train disaster in Indian history..

Most rail accidents are due to human error or outdated signaling equipment..