The United Liberation Movement for West Papua has opened an office in the town of Wamena in the Highlands of Indonesia's Papua province.
The Movement comprises leading West Papuan political organisations, representing the indigenous people of Indonesia's Papua region at the Melanesian Spearhead Group.
A spokesman for the OPM National Liberation Army for West Papua, Sebby Sambom, said the Wamena office was opened with the support of the current MSG chairman, Solomon Islands prime minister Manasseh Sogavare.
After being granted observer status at the MSG last year, the Movement continues to build its international network lobbying for Papuan self-determination.
It also has offices in Vanuatu and Solomon Islands.
Mr Sambom said he hoped the presence of a ULMWP office in Wamena would strengthen international support for Papuan independence.
Meanwhile, Kompas reports the Regional Military Commander, Major General Hinsa Siburian, as saying he has not received a report about the inauguration of the ULMWP office, but that the unitary republic of Indonesia remains firm.