Regional candidates Michael Akis and Tony Puana are leading the petition.
The four-point petition covers allegations of bribery, undue influences, qualification to contest in 2012 and 2017 elections, and other election irregularities by the Electoral Commission during polling and counting.
The petitioners accused Governor Muthuvel of rigging the election process on the grounds that election officials had continued counting the regional ballot papers despite scrutineers disputing a number of ballot boxes.
Regional candidate and twice runner-up of provincial seat elections, Chris Paul Lagisa, is filing the Election Petition at the Waigani National Court.
(Loop file pic)