Burdened by the allegations of sabotaging industrialization and progress in West Bengal, Mamata Banerjee visited Delhi to shift the responsibility for the loss of the Nano plant for Singur to others. 

She met Prime Minister Manmohan Singh and President Pratibha Patil on Tuesday to demand action against the West Bengal government under Article 355 for its failure to stand by the agreement, in the Singur case, which stipulates that 400 acres acquired be portioned out and returned to farmers. 

Mamata Banerjee was accompanied by Samajwadi Party general secretary Amar Singh who proclaimed that his party's Bengal unit would be filing a defamation case against Ratan Tata for his comment describing Mamata as a "bad M" and Gujarat Chief Minister Narendra Modi as a "good M". 

"Tata needs to make up his mind whether he wants to become a politician - or whether he wants to remain an industrialist," Singh opined.

Asked if she considered the backout of Tata a victory, Mamata Banerjee said it was a victory for "ma, mati manush" (victory for the people of the soil).