However, it later turned out to be the sound of firecracker, they said.
Sanjeev Kumar, loco pilot of the New Delhi-bound Swaran Shatawadi Express train, which proceeded from Phagwara railway station around 6.20 pm, informed Phagwara Railway Station authorities about the loud sound.
He heard the sound while crossing Mauli Railway Station between Phagwara and Goraya at around 6.25 pm, officials said.
The Railway Protection Force officials and officers of Permanent Ways Inspection rushed to the spot to inspect any damage to railway track.
Rail traffic could be restored only after PWI officials gave green signal after inspecting the track.
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