At least seven people have been killed and dozens more were injured when an express train crashed near the Indian city of Jaipur yesterday.
All 15 carriages of the Mandore Express, travelling between Jodhpur and Delhi, were derailed.
Rescuers are using metal-cutting equipment to try to free people trapped in three overturned carriages.
India's vast railway network carries many millions of people daily, but has a poor safety record.
Last week, 14 people were killed when a passenger train rammed into a truck at an unmanned railway crossing in Uttar Pradesh.
And in October, two passenger trains collided near the city of Mathura in the north, killing at least 22.