Well, since the information you have suggests that a student did indeed violate the ED policy, the question is: what should you do about it? I would start with your own parents, and start it as a hypothetical. Such, as, if I found out that person X in my school applied early to both Penn and Brown, what should I do? Alternatively (or subsequently), you could pose that same hypo to anyone in the school guidance department (it’s not an accusation, it’s a question). Alternatively, you could let it go—this person is a friend, after all. Finally, it’s still possible that your facts are not quite correct (or that your friend has not been quite honest with you (someone who has admitted to not following ED policies may not be all too honest about other things as well)).