PPC Manus Chief Inspector David Yapu said the building was completely gutted down on Saturday 3 August between 3 and 5am.
He was informed of the incident by the LLG Manager, Joseph N’Drasal, and dispatched his team of CID members to investigate.
No suspects have been detained however, Police believe it may be LLG election related.
PPC Yapu appealed to the newly-elected ward councilors with the community leaders to work together, identify suspects and bring them to the Police.
He said such government buildings should be respected and it is a venue where the ward councilors meet and conduct their meetings and pass resolutions to bring development to their community.