I emmigrated at an early age from a country (Russia) with a deep and ubiquitous network of "informers". It's my personal belief that informing, snitching, or otherwise sticking your nose into places where it has no business in order to satisfy one's self-righteousness, to stir things up, or for one's own benefit, is among the most base and cowardly of human acts. Just my opinion.
Let the owners of intellectual property do their own damn enforcement and police-work.
Sorry if this is a bit strong; I don't know your motives for reporting on this student, but I have a hard time envisioning a scenario in which I would find it justified.