Alia Bhatt, who is shooting for ‘Brahmastra’ since February in Bulgaria, is down with injury since the weekend. The actress had been filming several heavy duty scenes with director Ayan Mukerji when she suffered injury on her right shoulder and arm. Alia has been using an arm sling and has been advised to rest for a couple of weeks. Alia was preparing for her action packed role months before she began shooting for the film. Produced by Karan Johar, ‘Brahmastra’ is the first part in the trilogy which features Ranbir Kapoor as a superhero with special powers. The film also stars Amitabh Bachchan and Mouni Roy.