India, May 17 -- An FIR was registered on Friday against a Kolkata-based railway equipment supplier for allegedly supplying counterfeit and expired circuit breakers that failed during a fire incident aboard the Mumbai-Firozpur Punjab Mail in March, endangering passengers.

Police said that the accused firm, Aspee Sales Corporation, had supplied 325 Motor Protection Circuit Breakers (MPCB) to the railways for Rs.4 lakh after winning an online tender floated in November 2025. According to the FIR, some of the devices were installed in a coach later attached to the Punjab Mail.

On March 7, while the train was travelling from Mumbai to Firozpur, smoke emanated from one of the coaches near Firozpur, hinting at a fire-like situation.

"The MPC...