Facebook Hacker Arrested: IT Act Applicability

Let's say Rohan, an avid Facebook user, posts an embarrassing video of our school principal on his Facebook wall without permission. The principal, a respected figure in the community, is devastated by this and files a complaint against Rohan under the IT Act, 2000. The video was created on Rohan's computer and uploaded directly from his phone to Facebook using the Facebook app. Now, our principal is demanding action from the cops, and the cops are asking Rohan to delete the video. What can the cops do to Rohan under the IT Act? Can they charge him under cybercrime or is it a civil matter?