[citation needed] The couple decided to travel with the now defunct Titanic Express bus service from Kigali to Bujumbura, a journey usually taking around seven hours, to introduce Charlotte to Richard's family.
In the weeks following the killings, Charlotte's mother and her younger brother, Richard, made public appeals to the British government to investigate the incident and to treat it as a war crime,[4] a move which met with limited success.
Richard continued his enquiries personally, however, and via the Human Rights Watch organisation and various contacts he had made in Rwanda and Burundi, he established that the FNL, under the leadership of Albert Sibomana, were responsible for the killing.
[citation needed] 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.
[citation needed] In 2006, Richard wrote a book titled 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.
A week after the August 2004 Gatumba massacre, a multi-ethnic group of Burundian volunteers from 'Youth Intervention for Peace' took food and clothes to the survivors, paid for in part by the Charlotte Wilson Memorial Fund.