Eight wagons of a freight train derailed late Saturday night between Lahaban and Simultala stations in Bihar, disrupting rail services on the busy Delhi-Howrah corridor. Restoration work is underway on a war footing, with accident relief trains dispatched to the site. The derailment has led to the cancellation and diversion of multiple long-distance and passenger trains, impacting services on both up and down lines. Investigations are focusing on track maintenance and wagon conditions. No injuries have been reported.