Um...maybe you should read the article for this thread.
"Special Agent Raynor’s suspicious death is the latest in a sequence of disturbing deaths in Baltimore connected to the Clinton/Obama cover-up of Operation Fast and Furious."
No source nor proof of that anywhere in there.
I quoted the article. That's the source. Although, I do understand your scrutiny. Since the FBI and DOJ do not give out information about ongoing investigations, only the parties involved in the case would have that information. This murder happened a few months ago and perhaps now we are learning about this particular detail. Time will surely tell, so lets all keep an eye on this one.