Most of the passengers were asleep at the time of the accident
A train in northern India has derailed, killing at least 116 people and injuring dozens more, police officials have said.
Home Minister Rajnath Singh said the express train travelling between the cities of Patna and Indore came off the tracks near Kanpur city.
Fourteen carriages of the train derailed, railway officials said.
Two senior police officials in Kanpur said their teams have pulled out at least 90 bodies from the badly damaged carriages.
"Still many more passengers are trapped," a senior railway official in New Delhi said.
Prime Minister Narendra Modi took to Twitter to express his condolences.
"Anguished beyond words on the loss of lives due to the derailing of the Patna-Indore express. My thoughts are with the bereaved families," he wrote.
Prayers with those injured in the tragic train accident. I've spoken to @sureshpprabhu, who is personally monitoring the situation closely.— Narendra Modi (@narendramodi) November 20, 2016
Railways Minister Suresh Prabhu said the government would immediately investigate the causes of the derailment and promised accountability with the "strictest possible action".
1/Enhanced amount of ex-gratia compensation to the victims of this unfortunate accident:Rs.3.5 L in case of death— Suresh Prabhu (@sureshpprabhu) November 20, 2016
India's railway system is the world's fourth largest, ferrying more than 20 million people each day, but it has a poor safety record, with thousands of people dying in accidents every year.
The nation suffers frequent train derailments, sometimes with tragic consequences, including another train accident in Uttar Pradesh in March last year that killed 39 people.