According to a Central Railway spokesperson, the incident occurred at around 3:10 pm, following which the fire brigade was immediately alerted. The blaze was successfully extinguished by 4:00 pm, preventing further spread.

Officials stated that nearly 70 per cent of the upper portion of the coach was damaged in the fire. However, the underslung equipment of the coach remained intact and unaffected.

Initial investigations indicate that welding work was underway in the toilet area at the Chhatrapati Shivaji Maharaj Terminus (CSMT) end of the coach. Sparks from the welding process are suspected to have ignited nearby materials, leading to the fire.

Authorities noted that strong winds, along with the non-air-conditioned structure of the coach, contributed to the rapid spread of the fire.

Railway officials confirmed that no other coaches or workshop infrastructure were affected. The coach was immediately moved to an open area, which helped contain the fire and prevent further damage.