https://www.google.com/amp/www.foxnews.com/politics/2017/05/16/slain-dnc-staffer-had-contact-with-wikileaks-investigator-says.amp.html
There are several iterations of the PI's interview.
I think if I were Rich's family, I'd be scared too.
An excerpt:
“My investigation up to this point shows there was some degree of email exchange between Seth Rich and WikiLeaks,” Wheeler said. “I do believe that the answers to who murdered Seth Rich sits on his computer on a shelf at the DC police or FBI headquarters.”
The federal investigator, who requested anonymity, said 44,053 emails and 17,761 attachments between Democratic National Committee leaders, spanning from January 2015 through late May 2016, were transferred from Rich to MacFadyen before May 21.
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The FBI takes custody of the laptop, and sits on it. I bet that laptop is now 'missing'.