Also, the sci-fi thriller was initially offered to the Selvandhan star Mahesh Babu, who subsequently turned it down because of some ostensible issues with the film's script, according to a trusted source.
"Director Vikram Kumar had originally approached Mahesh with the script. He read it and really liked the first half. However, he was not happy with the second half and hence, turned down the offer, which eventually was lapped up by Suriya," the source added.
While AR Rahman is taking care of the musical bit of 24, the film has two leading ladies in Samantha and Nithya Menon.