The 29-year-old 6-foot-4 actor who describes himself as "the least dangerous person I know", said he got the part after being called to audition for a role the casting director was not allowed to name, reported New York Post.
"I think I was asked about my height a few times, and that made me think, 'OK, I'll be playing a tall man or woman'. But I wasn't fooling myself. My span of film castings have consisted of either terrorist, drug dealer, drug addict, heavy, henchman, large man, very tall man. I think it's something to do with how I look," he said.
He was told he'd be playing bin Laden only after the role was his. Sekhon admitted the prospect was worrying.
"There were a few sleepless nights, to say the least. I don't care how much confidence you have, hearing news like that will really put (pressure on) you if you're planning on taking it seriously, which I was."
Sekhon spent eight weeks preparing for the role seriously.