LONDON — India’s iRock Films has greenlit sci-fi action adventure film “Chaand 2013,” which will be directed by Anthony D’Souza.The $20 million pic will see major Mumbai landmarks under attack from aliens. Principal photography will start mid-2012 with a view to a summer 2013 release. The film will be in both regular and 3D formats. Casting is underway, with iRock looking at Bollywood and Tamil- or Telugu-language film stars to play the two male leads. Sidhartha Jain, whose credits include Willard Carroll’s “Marigold,” will produce for iRock. Jain told Variety, “Anthony is one of the few directors in India who has the right skills for executing a large VFX action-adventure.” D’Souza’s directorial debut, 2009’s aquatic adventure “Blue,” grossed $13.5 million.