I would start with the email. Headers store quite a bit of information, and can usually tell you where the email started from. Start by contacting whoever the e

I would start with the email. Headers store quite a bit of information, and can usually tell you where the email started from. Start by contacting whoever the email originated from. Unfortunately, its rather easy to get beyond the range any realistic, legal tracking can be done. Your best bet of finally tracking the person down is to go by the phone number, but that will likely (if he knows what he's doing) be a pre-paid phone with fake information that has no way to be traced back to him (other than rough estimates of location, and the phone companies are unlikely to release that kind of information). Its really unfortunate that most of cyber-forensics relies on analysis of computer systems to prove that a person did something, rather than finding and tracking down who did it. With all that said, the good news is that a few Google searches may turn up some useful information. Google the phone number, email and name, maybe you'll get lucky and either find the person bragging about it, or someone else in the same situation.