Excerpt from Ilyas Ahmad Chattha's PhD Thesis (Page 141):

https://eprints.soton.ac.uk/366712/1/Ilyas%2520PhD-E-Thesis.pdf

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One of the worst train massacres occurred in the outskirts of Nizamabad, Gujranwala on the Wazirabad-Jammu railway track on 18 August 1947. The story of this systematic massacre at Hindu and Sikh passengers is well-known in the region, especially in Nizamabad. This was however never reported in the press and is not part of historical narratives. There are eye-witness accounts of the train carnage in Nizamabad itself. An eyewitness, Mohammad Ramzan, 18 at the time and a resident of Nizamabad, provided this detailed and graphic account of the episode.

One night they gathered at Ibrahim’s place [house] and made planning for a train attack. They planned everything with Rahamat Kashmiri who was a train driver of the train which operated via Wazirabad-Jammu railway track. He was asked to stop the train at Sialkot-Jammu railway track about a mile away from the Nizamabad railway station. Rahamat Kashmiri suggested to them to put a couple of big trees in the front of the track because this not only helped him to identify the ‘stopping-spot’ but could provide a justification to stop the train. The next day more than 200 people with axes, swords and draggers barches concealed themselves in the sugar-cane fields. The train stopped where he [Rahamat Kashmiri] was told to stop, where they had thrown some cut-trees [on the track]. They attacked the train and killed all the people in the train, including children and women. They did not spare a single one. The train and whole place around filled with corpses and blood. I was 18 years old. I saw the [Lohars of Nizamabad] first enter in the train and then slaughter Hindus and Sikhs. They looted all their belongings and took tem away their big trucks, carrying on their shoulders and heads. I did not loot anything.