New Delhi, Sept. 5 -- Congress General Secretary Sachin Pilot on Saturday claimed there must have been pressure on the publishing company 'Penguin' not to publish a biography of party leader Sonia Gandhi, adding that attempts to prevent the publication of such a book would be a matter of concern.

Speaking about the book, Pilot said Sonia Gandhi's biography would be a remarkable story covering her journey to India, contributions and sacrifices for the Congress party and her personal and political life.

"There must have been some pressure on the publishing company not to publish it. Sonia ji's biography is, in itself, a remarkable story. The way she came to this country, became a part of it, and made many contributions and sacrifices for ...