The oil and gas boss who led Papua New Guinea’s bid for a National Rugby League franchise has blasted corruption concerns about his business dealings as “baseless claims” designed to discredit the country’s historic admission to the Australian competition. Wapu Sonk on Friday stepped down as a director from the incoming team’s board at the request of PNG Prime Minister James Marape, after this masthead uncovered suspect dealings between the Sonk-led Kumul Petroleum Holdings and a Chinese government-controlled entity over the upgrade of a PNG port. Marape said at the weekend that he ordered an investigation after a letter emerged from March this year from Australian-born Kumul Petroleum project manager Jason Pollock to the Chinese company directing it to use companies owned by Pollock and Sonk. Sonk is managing director of Kumul Petroleum, PNG’s state-owned energy business and the country’s largest company.