The FNL finally admitted responsibility for the massacre in 2005, but by then they, and indeed Sibomana himself, were being given "provisional immunity" by the Burundi government and the international community as part of a tentative peace process being negotiated in the country [REF].
In 2006, Richard wrote a book entitled Titanic Express: Finding Answers in the Aftermath of Terror, describing the events leading up to his sister's death and his own efforts in tracking down and attempting to bring her killers to justice.