Sean Hannity is not the story here, in spite of the many posts about him. He is a newsreader. He does not write the "news", but says what his bosses tell him to say.

The real story is that** the former speaker of the House of Representatives says that Seth Rich was assassinated as the Wikileaks source.**

Here's what Gingrich said: We have this very strange story now of this young man who worked at the Democratic National Committee, who apparently was ASSASSINATED, at four in the morning, uh having given Wikileaks something like 23,000, um I’m sorry 53,000 emails and 17,000 attachments. Nobody is investigating that. And what does that tell you about what was going on? Because it turns out it wasn’t the Russians. It was this young guy who I suspect was disgusted by the corruption of the Democratic National Committee. He’s been killed and apparently nothing serious has been done to investigate his murder. So, I’d like to see how Mueller is going to define what his assignment is. And if it’s only narrowly Trump, the country will not learn what it needs to learn about foreign involvement in American politics."

Source: http://thefreethoughtproject.com/newt-gingrich-calls-seth-richs-death-assassination-richs-surgeon-speaks/