Several bogies of the Howrah-Mumbai Jnaneswari Express got derailed at Sardiha in Jhargram, while a goods train coming from the opposite side ramming into it.
Meanwhile, on Sunday PM Narendra Modi chaired a high-level meeting to review the preparedness of the States and Central Ministries/Agencies which will be dealing with the disaster.
On Thursday, Delhi dy CM Manish Sisodia wrote a letter to the Centre seeking further increase in Delhi's allocation of medical oxygen from the present 490 tonne per day to 976 tonne.
No decision has been taken on cancellation of trains in the Howrah section, an official said.
Preliminary findings suggested that the blaze was caused by an electrical short-circuit on the 13th floor of the New Koilaghat Building, owned by Eastern Railway (ER).
Dhankar felt that there is a need for modernisation of fire and municipal services in Kolkata, which is a major city in the country and the world.
Senior officials, including the Eastern Railway general manager, were present during the firefighting operation at the building on Monday evening, a railway spokesperson said.
Forest officials blamed the loco pilot and said that though railways was intimated about the movement of an elephant herd, the train was running at a high speed when it hit the elephants.
The e-catering services will be restarted soon at Howrah, Sealdah, Kolkata, Durgapur, Asansol, Malda and Bhagalpur stations under the jurisdiction of the ER.
Facing pressure from local leadership, the South Eastern Railway has finally hinted at completion of the stalled four-lane project.
The route is mostly used for transportation of iron ore. The goods train enroute to Rourkela was stationed at Barsuan railway yard.
Non-suburban passenger train services were stopped in the last week of March due to the COVID-19 pandemic.
The West Bengal government has sought a meeting with the ER authorities on the issue, sources said.