Seth Rich died on July 10th, 2016, and these emails are from August 10th, 2016. They're not really about Seth Rich or any investigation of his death. It's very clear from the first email in the chain that this was specifically about claims that Julian Assange had been making really vaguely in the media that Seth Rich was the source of the emails that WikiLeaks published. This email, the initial one, is from the Public Affairs Office or the media relations section of the FBI asking some folks if the FBI had any involvement in this. There are a lot of parts retracted for who knows what reason, but the exchange, as it appears, seems to be them saying that there is no FBI involvement.