Still basking in the success of his cross-border sports film "Lahore", debutant director Sanjay Puran Singh Chauhan is working on two magnum opus projects, including a sci-fi film.

"I am working on two projects now - a sci-fi and a historical. I'll start with the sci-fi film by the end of the year and I am keeping all of it very confidential. I am not going to tell even my actors about it this time, " Chauhan told.

"Right now we are working on the story and once everything is finalised, we will zero in on the cast, etc, " he added.

Chauhan's "Lahore" has also been sought by US studio Hollywood Gang for a remake, making it the first Indian film to be remade there.