A TMC delegation met the Election Commission (EC) on Friday and demanded a high-level probe into an alleged attack on Bengal Chief Minister Mamata Banerjee in Nandigram, while claiming that it was not an "unfortunate incident", but a conspiracy.

The six-member delegation of the Trinamul Congress (TMC) met the full EC team, including Chief Election Commissioner (CEC) Sunil Arora, for over an hour and submitted a memorandum to it, highlighting how BJP leaders in Bengal had threatened the chief minister through tweets and other remarks.

"Injuries to Mamata Banerjee in Nandigram were not a result of an unfortunate incident but that of a conspiracy. The events leading up to the attempt on her life leave no doubt that the attack was part of a deep-rooted conspiracy," TMC MP Saugata Roy told reporters after meeting the EC.

In the memorandum, the TMC has made allegations against Suvendu Adhikari, the Bharatiya Janata Party (BJP) candidate from Nandigram in the upcoming state Assembly polls.

"When an attempt was made on the life of Ms Banerjee, in which she was grievously hurt, to cover up the attack, eye-witnesses were planted, illustratively, eye-witnesses Chittaranjan Das and Debabrata Das, who testified that Ms Banerjee's car was hit against an iron pillar, are associates of Suvendu Adhikari, BJP candidate from Nandigram," the memorandum says.

The TMC boss had suffered injuries on her left leg and waist as she fell on the ground after being allegedly pushed by unknown people while campaigning for the assembly elections in Nandigram in Purba Medinipur district.

She is undergoing treatment at the 12.5 special cabin of Woodburn Block at SSKM Hospital.