Filmmaker Vikramaditya Motwane suffered an injury while demonstrating a crucial scene in his latest 'Trapped'. 
Motwane was demonstrating a scene which required Rajkummar to try opening the door by hitting the lock of the door from inside with an iron plier, sources close to him said.

While demonstrating the scene to Rao, he suddenly hit his finger really hard with the plier, the sources added.

The scene was shot on the fourth day of shoot and Motwane's finger was black and blue until the 25th day of the shoot. 

The scene features in the trailer where Rajkummar is fiercely hitting the door lock hard with an iron plier and in turn hurts his hand. 

The scene depicts a crucial point in the film where the protagonist tries his best to set himself free.