The Papua New Guinea Defence Force board of inquiry into Julian Moti's flight from Port Moresby to Solomon Islands in a defence force aircraft is continuing to hear evidence in camera.
Earlier this week the inquiry heard evidence from Chief Secretary to Government, Joshua Kalinoe, and the Director-General of the National Security Advisory Council, Joseph Assaigo, behind closed doors.
The inquiry panel headed by Justice Gibbs Salika made the decision to hold hearings in camera after an application by lawyers representing the Chief Secretary.
The next witness at the inquiry is expected to be the Prime Minister's Chief of Staff Leonard Louma.
He has confirmed he had been summonsed to appear before the inquiry.
It is understood his name was mentioned during earlier evidence to the inquiry.