John Momis has been re-elected president of the Autonomous Region of Bougainville.
He was declared the president-elect by the Regional Returning Officer John Itanu on Saturday after defeating eight other candidates also vying for the presidential seat.
Mr Momis who has held the presidency for the past five years had led the race since the start of week-long counting.
The former Bougainville Revolutionary Army leader, Ishmael Toroama, was runner up receiving 18,466 votes to Mr Momis' 51,382.
Mr Momis commended elections authorities for the successful staging of the election which was conducted for the first time by the autonomous Papua New Guinea region's own electoral commission.