The New-Delhi-bound 12565 Bihar Sampark Kranti Express sped ahead leaving four bogies behind at Laheriasarai railway station, around 175km northeast of Patna, on Friday morning.
The freak incident affected train movement on the Darbhanga-Samastipur route for half-an-hour.
The train left Darbhanga railway station at 8.35am and reached Laheriasarai railway station around 8.45am.
The train left three general bogies and the guard’s cabin at Laheriasarai railway station and the locomotive crossed the next surface level crossing 200m away with its other bogies.
Suddenly, the driver noticed the monitor of the air brake system in his cabin indicating less weightage, implying that some of the bogies had been left behind.
No injury was reported but the passengers’ commotion delayed the train by half-an-hour. The railways’ speedy action helped attach the detached bogies to the train.
Divisional railway manager (DRM) of Samastipur rail division of Eastern Central Railway Arun Malik told The Telegraph: “The bogies that were left behind were not coupled with the remaining part of the train properly. The incident did not affect much train movement.”
He added: “A team of four senior supervisors was formed to inquire into the incident and to ensure steps to avoid a repeat.”
Rajju Sah, who boarded the train’s general bogie, said: “I felt a great jolt when the bogies got delinked from the train. Luckily, no one was injured.”