Rumours of a fire in the Lucknow-Chandigarh Sadbhawana Express created panic among passengers on Sunday near Raisi station in Laksar area of the district.
As the train stopped shortly afterwards at a railway bridge over the swollen Banganga river, the panic-stricken passengers got down and crossed the bridge on foot.
However, later it turned out that someone had pulled the chain and as a result its jammed wheels emitted smoke triggering the rumours of a fire, Laksar station superintendent SK Tiwari said.
The train stood at the bridge for nearly half-an-hour, he said.
Railway officials rushed to the spot and allowed the train to proceed after its brakes were repaired, Tiwari said.