The latest Kim Dotcom tweet posted around 1:00 PM EDT. It directs you to the kim.com website, where if you scroll down you can read his statement regarding Seth Rich:

I know that Setch Rich was involved in the DNC leak.

I know this because in late 2014 a person contacted me about helping me to start a branch of the Internet Party in the United States. He called himself Panda. I now know that Panda was Seth Rich.