The dismembered body of a young albino boy has been found in a river on the Burundi-Tanzania border.
The boy, aged nine, was reportedly taken from Makamba province in Burundi by a gang that crossed the border.
Burundi Albino Association head Kassim Kazungu said the remains had been recovered from the Malagarazi river and given a formal burial.
The BBC reports albino body parts are prized in parts of Africa, with witch-doctors claiming they have special powers.
Mr Kazungu told the AFP news agency that Tanzanian police had arrested five people, although there was no official confirmation from Tanzania.
Dozens of albinos have been killed there and the killings have spread to Burundi.
In August, a court in Tanzania sentenced a Kenyan man to 17 years in prison on charges of trying to sell an albino person.
Tanzania has promised to crack down on albino traffickers and several people have been sentenced to death in connection with killings.