"A section of BJP leaders is opposing the change of name," Mamata Banerjee alleged. (File)

West Bengal Chief Minister Mamata Banerjee on Friday accused a "section of BJP leaders" of not allowing to them change the name of the state to ''Bangla'' and accused the Centre of "depriving" the state.

"We have been trying since 2003, but till date, it has not happened. Why is Bengal being deprived? All the languages should be respected," she said on the floor of the House.

"A section of BJP leaders is opposing the change of name. It is politically motivated. I have also written a letter regarding the matter," she said.

On Wednesday, Ms Banerjee wrote to Prime Minister Narendra Modi to expedite the process of changing the state's name to Bangla. She also asked him for necessary action including a constitutional amendment in the ongoing Parliament session.

Union Minister of State for Home Nityanand Rai in a written response to a question from MP Ritabrata Banerjee on Wednesday said that changing a state's name requires constitutional amendment and it is done after taking into consideration all relevant factors.

On July 26 last year, the West Bengal assembly had passed a resolution unanimously to change the name of the state to ''Bangla'' in the three most-spoken languages -- Bengali, Hindi and English -- and sent the proposal to the Union Home Ministry.