One of India’s bestselling author Amish Tripathi, whose Shiva trilogy has now sold over a million copies, is beaming with pleasure after an American producer purchased the rights to his trilogy.

The author had earlier sold the rights of his books - "The Immortals of Meluha", "The Secret of the Nagas" and "The Oath of the Vayuputras" – to Karan Johar of Dharma productions.

The author is elated with the fact that both international and Indian filmmakers are adapting his books into movies.

“All three books are contracted for the movie projects. The international rights have been purchased by an American producer and for India the rights are with Karan Johar's Dharma Productions," Tripathi told IANS on phone from Mumbai.

The author though refused to disclose the name of the American producer.

“I have signed the deal with a US producer for the first book with an option for the subsequent books. I can't disclose the name as of now, it will be announced shortly," the 40-year-old author said.

When asked about his involvement with the movie projects, Tripathi said that he is not writing the screenplay.

"In both the projects, I am the creative consultant. I am not writing the screenplay. The screenplay work has already begun for the Indian language adaptation by Dharma. I help the screenplay writers Karan Malhotra and his wife Ekta," he said.

"The books have sold two million copies. All the three books are still in the top three list. Movies will take time but will help my books," he added.

It’s rumored that the Indian film adaptation will star Hrithik Roshan as Lord Shiva.