KUALA LUMPUR, Malaysia--Malaysian state-owned palm oil firm Felda Global Ventures Holdings (5222.KU) said Monday that Chairman Isa Samad has resigned, and that it has appointed Sulaiman Mahbob as acting chairman, effective immediately. Mr. Sulaiman, chairman of telecom company Telekom Malaysia Bhd. (4863.KU), was an independent non-executive director at Felda Global. The board changes come amid infighting in the company's management following the suspension of senior executives, including President and Chief Executive Zakaria Arshad, earlier this month to facilitate an investigation into one of its subsidiaries' transactions.