heading Avadh Assam Express had already moved the train to downline and on the same track, BC Bardhan heading Delhi bound Brahmaputra Mail was coming. The cause of disaster was duty negligence made by ASM of Kishanganj Railway Station as due to setting wrong points manually on the track by track men, Avadh Assam Express shifted to downline which should have been upline otherwise. At the same time, information was passed to the next station that Avadh Assam Express had been sent to upline from Kishanganj station which was incorrect from the fact that Avadh Assam Express was running on downline track. The convergence point of two trains was at Gaisal Railway station (near to Kishanganj) where both trains collided. According to the witnesses, engine of Avadh Assam express jumped several feet high and engine of Brahmaputra Mail rammed into several coaches of Avadh Assam Express resulting in one of the deadliest disasters of the Indian Railways. If perhaps the driver of Avadh Assam Express had seen the signal lights by peeping outside from his seat, he could have averted the disaster as on his line, all signals were pointing opposite side green instead of usual front facing green signals. That opposite side green signal was for the driver BC Wardhan of Delhi bound Brahmaputra Mail. Moreover, if station cabin of Kishanganj Railway station could have checked the green signal of upline not turned to red which was supposed to be red in case Avadh Assam Express would have touched upline, this disaster could have been averted. Whenever any train crosses the Advance Starter point of railway station, green signal is turned to red either manually or automatically and again becomes green after train crosses nearby one or two stations. Since Avadh Assam express had not touched the upline, green signals on upline were lighting up green and had not turned red. If perhaps this had been noticed by cabin staff of Kishanganj Railway station on time, trains could have been stopped before Gaisal and this disaster could have been averted. Assistant Station Master (ASM) of Kishanganj station, S P Chandra, later admitted to sending the Avadh Assam Express on the wrong (down) line, causing it to collide with the Brahmaputra Mail on August 1, first presented by a preliminary inquiry report of Chief Commissioner of Railway Safety (CCRS). Immediately after the incident Chandra absconded and was arrested in Katihar