Dr Moutu took up the position as the director for PNG NMAG in 2010.
The Office of Tourism, Arts and Culture (OTAC) is now going through the process of advertising an appointment for the position.
Minister for Tourism, Arts and Culture Tobias Kulang has directed the Board of Trustees NMAG to submit a list of three candidates to be considered by the National Executive Council for an acting appointment.
Kulang said an acting appointee will be announced in the next few days.
