Singh had on Saturday called on the jailed activists, one of whom was arrested recently in connection with a communal flare-up that took place last year
The issue was raised in both Houses of Parliament with main opposition Congress too seeking clarification.
He said that the grouping up of opposition parties, which are "jealous" of Prime Minister Narendra Modi's popularity, is opportunistic and will not succeed.
The TMC leadership has decided to raise the issue in both the houses of Parliament.
'There are so many schemes announced for the benefit of farmers, women and less privileged sections of our society. But how many of these are being availed of?'
An emotional farewell was given to the valiant army jawans who lost their lives in the Uri attack, as their last rites were performed in their respective native villages with full military and state honours.
While some states like Kerala and Telangana were badly hit by the strike, the impact was partial in Punjab, Haryana and Maharashtra
Only nine out of India's 29 states have Hindi as the official language, so why impose Hindi on the other states, asks Syed Firdaus Ashraf.
'The CM seems to have forgotten that she is dealing with the Gorkhas, people known for their valour and loyalty to India.' 'It is shameful that Mamata Banerjee and her administration treated them like insurgents, choosing to use live bullets instead of other ways and means to control crowds.'
As Prime Minister Narendra Modi defended the demonetisation move, the united opposition hit back at the government over common man's suffering.
'Today, environment has become an issue of political debate. It has become a media issue. I think that is a good development.'