Fans of popular Bollywood actor Sanjay Dutt can read about his eventful life in his autobiography, "The Roar of a Lion", which he is now working on.

"Sanjay Dutt's autobiography is called 'The Roar of a Lion' and it is almost half way done, " a well-placed source in the film industry told here Saturday, revealing the title that was the subject of much guesswork so far.

The date for the book's release has not been decided as Dutt is busy with his film schedules.

He had long been telling friends about his wish to pen an autobiography. When he told his wife Manyata about it, she backed him to the hilt.

Meanwhile, Dutt's filmmaker friend Sanjay Gupta too has commissioned a biography of the actor as a tribute to him.

To be penned by journalist, author and lyricist Neelesh Mishra, it will be in three volumes covering Dutt's life in three phases.

The first volume will deal with the period when the star went into drug rehabilitation. The second volume will recount his marriage to Richa Sharma, their divorce and her tragic death, while the final volume will be about his legal battles, probation and life beyond all that.