Filmmaker Karan Johar, who is co-producing the film, took to Twitter on Tuesday morning and shared a photograph of the film's clapboard.
"The journey of 'Raazi' begins today! All the best to all of us! Meghna Gulzar, Dharma Movies, Junglee Pictures, Alia Bhatt and Vicky Kaushal," Karan captioned the image.
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Meghna, who has earlier made films like "Filhaal..." and "Talvar", is the daughter of celebrated writer Gulzar and veteran actress Raakhee.
For "Raazi", which narrates the story of a Kashmiri girl marred to a Pakistani Army officer, she has cast actors Alia Bhatt and Vicky Kaushal.
The espionage thriller is based on Harinder Sikka's novel "Calling Sehmat", and will be shot in Punjab, Kashmir and Mumbai.