1: The miniature aircraft will be fitted with a camera and pepper spray ; each drone costs between $ 9,560 and $ 19,300 , Yadav added . 2: As well as being used as a security measure in other cities including Delhi and Mumbai , the unmanned , airborne vehicles have been used in tiger hunts , disaster relief and criminal investigations -- and even pizza deliveries . 3: The unmanned aerial vehicles are being fitted with cameras and pepper spray to subdue angry protesters .
1: The miniature aircraft 2: the unmanned , airborne vehicles 3: The unmanned aerial vehicles