An independent report has concluded the reburial of 46,000-year-old Indigenous remains was done "accordingly" despite going against the wishes of some traditional owners.
The New South Wales government commissioned the report in May after the remains of Mungo Man and Mungo Lady were reinterred in the Willandra Lakes Region.
The bodies were reburied despite a last-minute legal challenge by first nations people from the Baakanjti-Paakantyi and Mutthi Mutthi tribes to stop the process from happening.
Mungo National Park is home to three Aboriginal groups including majority native title holders, the Baakantji-Paakantyi people, along with the Mutthi Mutthi, and the Ngiyampaa tribes.
In a statement, the Department of Planning and Environment said the remains were buried in accordance with the conditions of approval stipulated by the Commonwealth.
The remaining 106 ancestral remains are being held in secure storage at Mungo National Park.
NSW Environment Minister James Griffith told budget estimates the findings of the independent report would not be publicly.
"It's really important to acknowledge the terrific sensitivities that exist around that particular incident and also the profoundness of what occurred in the sense of the repatriation," Mr Griffith said.
"However, we will not be making the report public."
Environment and Heritage acting coordinator-general Atticus Fleming said the decision to reinter the skeletons was in line with the wishes of the federal government.
"The Commonwealth granted approval; in that approval they specifically indicated through a condition that we were to comply with the wishes of the Aboriginal Advisory Group," Mr Fleming said.
A statement from the federal Department of Agriculture, Water, and Environment after the reinterring of the remains back in May said it was the department's understanding that "the re-burial would not be occurring".
'We needed some answers'
Baakantji-Paakantyi man Michael Young said the decision not to publicly release the independent report was insulting to the native title holders.
"They still refused to be accountable for what happened out there and now it appears they are just covering it up," Mr Young said.
"It took us 18 years just to get the native title decision come through and now again this is just blatantly keeping us out of the loop."
Mr Young said the Baakantji-Paakantyi tribe was not consulted by anyone from the independent investigation or the New South Wales government.
"We have never had an authorisation meeting or a presentation to seek approval for this disastrous destruction of our heritage on our country," he said.
"This New South Wales government don't seek our permission; they don't engage with us."
A Department of Planning and Environment spokesperson said extensive public consultation took place and heard from 220 stakeholders.
Those stakeholders included Aboriginal organisations, scientists, and native title holders, according to the department.
The Aboriginal Advisory Board has been contacted for comment.
