The United Nations decolonisation committee says it will not accept a petition signed by 1.8 million West Papuans calling for an independence vote.
The petition, presented by the independence leader Benny Wenda on Tuesday, asked the UN to appoint a special representative to investigate abuses and to put West Papua back on the decolonisation agenda.
The committee's chair and Venezuela's representative to the UN, Rafael Ramírez, says he had received no formal petition document, and his office had been "manipulated" for political purposes.
Mr Ramírez also says the committee accepts Indonesia's sovereignty over West Papua, which took control of the western half of New Guinea in 1969.
In a statement, Indonesia's UN representative, Triansyah Djani, who sits on the committee, called Mr Wenda's petition a hoax and separatist propaganda.