controlled includes many well known to u.s. structures. one of the most famous projects is the troll factory that specialized in propaganda and informational war. >> reporter: they denied links to wagner paramilitaries, and putin always denied targeting journalists. but this isn't the first time a russian journalist investigating wagner died under mysterious circumstances. one that broke a story about wagner's activities falling from his fifth floor apartment in april. at the time, russian officials said they didn't suspect foul play. human rights observers caution the central african republic is racked with so much chaos and violence, it is possible the three russian journalists were targeted more randomly. >> it is a dangerous place to be and it could have been set up as a robbery, it could have been a robbery that went bad and they were killed. >> reporter: the kremlin is strongly suggesting it had nothing to do with the deaths of the three journalists. the russian foreign ministry