If any railway servant (whether on duty or otherwise) or any other person obstructs or causes to be obstructed or attempts to obstruct any train or other rolling stock upon a railway,—

1. by squatting or picketing or during any rail roko agitation or bandh; or
2. by keeping without authority any rolling stock on the railway; or
3. by tampering with, disconnecting or interfering in any other manner with its hose pipe or tampering with signal gear or otherwise,