Bihar has received the maximum number of migrant labourers through special trains so far and West Bengal the least, data accessed by the PTI shows, with officials indicating that the latter was "stalling" the movement of its workers stranded in other states.
TMC MP and leader of the party in Rajya Sabha, Derek O'Brien, however, said the West Bengal government was doing "all it takes" to fight the coronavirus pandemic, and accused the Centre of playing politics.
The data shows that most migrant labourers have moved from Gujarat to their home states in about 35 Shramik Special trains so far, followed by Kerala from where 13 such trains have left.
Among the receiving states, Bihar has accepted 13 trains, with 11 more currently on the journey and six in the pipeline, the data shows.
Neighbouring Uttar Pradesh has received 10 such trains and five more are on their way, with 12 in the pipeline, the data shows.
A senior official said, "While other states which have their migrant workers in other parts of the country are accepting their labourers, West Bengal is stalling (the process). Two trains -- from Thane to Shalimar and another from Bangalore to Howrah -- which were supposed to run today, did not get clearance from the West Bengal despite both the originating state governments pushing for it."
Derek O'Brien accused the Centre of playing politics over the issue.
"States, including Bengal, are going all out -- fighting corona. Unfortunately, the Central government is going all out -- fighting and badmouthing non-BJP states using its different ministries.
"States are the implementing authorities. We are all doing all it takes. This is not the time for politics. Or we too can ask: why was a 21-day lockdown announced with four hours notice?" he said.
According to figures from 2011 census, West Bengal ranks fourth among the states from where people migrate for work and employment.
The railway data shows that Jharkhand accepted four trains, while five trains are on their way to the state. Two more Shramik Special trains are in the pipeline.
Odisha received seven trains and five are on their way to the state with one more in the pipeline, the data shows.
The Railways on Tuesday said that since May 1, when Shramik Special trains started operations, it has run 76 of them, carrying more than 70,000 stranded migrant labourers.
Till May 4, the Railways had run 55 trains.
On May 5, it ran 12 trains in the morning and nine in the evening, taking the tally to 76. It said that zonal railways were planning to run 12 more by the end of the day.