"However, with an actor like Rajkummar, no challenge seems insurmountable and this was the ideal film to hurtle us out of our comfort zone to make something that is uncomfortable.
"But that is the burden of truth - it is uncomfortable and it must be faced."
According to Mehta, "Omerta" looks at what it means to be a fundamentalist and for someone to pick up a gun with the intent of killing in return for an afterlife in paradise.
"I want to leave the viewer with a sense of awe, disgust, hate, surprise and let them examine the ramifications of these events on their lives today," he added.
The National Award winning Rajkummar, who has delivered impactful performances in his past associations with Mehta, plays an anti-hero in the movie for the first time.
"'Omerta' is among the most researched films that I have worked on till date. We actually visited some of the places frequented by Omar in London during his transformation from a LSE graduation student to becoming this deadly terrorist.
"I needed to feel and touch this man's past - to ingest him. It was not an easy journey for me to take. With 'Omerta' and Hansal sir, we have a combination that will probably leave you stunned. There will be this moment of shock and silence as the end credits roll," he said.
Presented by Swiss Entertainment and Karma Media, and produced by Nahid Khan, the film is releasing on April 20.
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