Damaged train coaches at the site of a train accident, 180 kilometers from Bhopal near Harda district of Mahdya Pradesh, India, 05 August 2015. At least 25 people died when two passenger trains derailed in central India after heavy monsoon rains flooded railway tracks, officials said. Ten coaches from the trains toppled while approaching a small bridge just before midnight. (Photo by Sanjeev Gupta/EPA)

In this image made from video, people gather by the twisted track alongside two derailed trains in Harda in Madhya Pradesh state, India, Wednesday, August 5, 2015. (Photo via AP Video)

People gather at the site of a train accident near the town of Harda in Madhya Pradesh state, India, Wednesday, August 5, 2015. (Photo by AP Photo)

Damaged coaches of passenger trains are pictured after they derailed near Harda in Madhya Pradesh, India, August 5, 2015. Two express trains derailed into a river in central India overnight after flood water weakened the tracks, killing 21 people, state officials said on Wednesday, reigniting criticism about lack of safety on the world's fourth-largest rail network. (Photo by Reuters/Stringer)

In this image made from video, people gather by two derailed trains in Harda in Madhya Pradesh state, India, Wednesday, August 5, 2015. Two passenger trains derailed over a bridge in central India while crossing a track that was flooded by heavy monsoon rains, killing at a number of people, officials said Wednesday. (Photo via AP Video)

People gather at the scene where two trains derailed near the town of Harda in Madhya Pradesh state, India, Wednesday, August 5, 2015. (Photo by AP Photo)

People gather at the site of a train accident near the town of Harda in Madhya Pradesh state, India, Wednesday, August 5, 2015. (Photo by AP Photo)

Onlookers stand at the site of a train accident near the town of Harda in Madhya Pradesh state, India, Wednesday, August 5, 2015. (Photo by AP Photo)

Indian rescue workers search for bodies after a train accident near the town of Harda in Madhya Pradesh state, India, Wednesday, August 5, 2015. (Photo by AP Photo)

In this image made from video, a man sits alongside a derailed train in Harda in Madhya Pradesh state, India, Wednesday, August 5, 2015. (Photo via AP Video)

Indian policemen take a rest after rescue works at the site of a train accident at 180 kilometers from Bhopal near Harda district of Mahdya Pradesh, India 05 August 2015. (Photo by Sanjeev Gupta/EPA)