From January to July 1994, prior to and during the genocide, Ruggiu worked in Kigali, Rwanda as a journalist and producer for Radio Télévision Libre des Mille Collines (RTLM).
Although some of his defenders have suggested that Ruggiu did not know exactly what was going on around him in Rwanda, this opinion is sharply disputed by Rwandan Genocide scholar Alison des Forges: "It is beyond belief that Ruggiu did not know [what was going on]..