The line checking team noticed the crack near the rail gate of Samsi railway station and informed the matter to the Samsi station manager at about 5.45 AM.
The rail officials immediately halted the Hate-Bazare Express on the Up line and detained it there for about three hours, Samsi Station Manager Bimalendu Roy said.
After repairing the nearly six-inch crack, normalcy was restored at about 9 AM, he said.