A 21-year-old man was killed on an Amazonian Indian reservation in northwest Brazil, and police said Tuesday a witness to the attack claimed the victim was partially eaten by the Indians. Federal officials, however, disputed the assertion that cannibalism took place. Ocelio Alves de Carvalho was killed Feb. 3 on the Kulina Indian reservation, said Jose Carlos Correia da Silva, the military police commander in the small city of Envira in Amazonas state. Silva said an Indian who witnessed the killing - and tried to stop it - arrived at the police station to report the alleged murder the next day. The witness said body parts were roasted and eaten, Silva said.