long story short, there's this guy claiming that his friend and him had participated in solving the mystery, and then somehow they started getting e-mails and text messages with creepy content, such as:
and my mate got a text saying "You go looking for trouble, No need we will bring it to you"
And the name of the topic is "I think im going to die?"
The first one I posted is a reddit topic (or however you call those) which doesn't actually say more than the link that the OP of this topic posted.
However, having thought this over and searching the web for similar content (people claiming they got contacted by ''them'' only to receive such creepyfing content) and not finding anything, my conclusion is that the guy is a troll.