After receiving a series of threats, Katia Camargo and her two children entered a witness protection program on 5 January. They are no longer believed to be in grave danger. Katia Camargo had been threatened by people linked to the killers of her husband, investigative journalist Luiz Carlos Barbon. The journalist, who had reported on official corruption, was murdered in May 2007. Their protection was ordered by Sao Paulo's Human Rights Prosecutor. It is unusual for the Prosecutor to act so rapidly on such a case. It is notable that the prosecutor's office acted with impressive speed in this case due in part to Amnesty International's intervention.