In a statement, TUT said it was sending a worker to inspect the damage and had notified the Department of Conservation (DoC) as the hut's owner.
It was not responsible for the destruction of Otamatuna hut, TUT said.
“Te Uru Taumatua is abiding by the current interim order of the High Court from November that no huts be removed from Te Urewera pending a substantive hearing on the matter.
“Te Uru Taumatua's hut decommissioning programme, while described as “burning” in the media, involved methodical deconstruction with burning as only one part of the process, and was carried out subject to strict health and safety procedures by supervised teams in appropriate weather,” the statement said.
The Department of Conservation said it had reported the fire to police.
The incident has caused concern among some locals and conservationists.
Former Te Urewera Mainland Island kōkako recovery project manager Pete Shaw, whose objections to many aspects of TUT's management of Te Urewera have been widely reported, told RNZ this week the latest fire was a “travesty”.
“It's just part of the ongoing degradation of Te Urewera under Te Uru Taumatua. They've let the tracks grow over, they've let the weeds run rampant, they've let the pests go ballistic,” Shaw said.
But a trustee of Tetaiahape Marae in the Waimana Valley, Matt Te Pou, told RNZ he believed the fire was someone getting up to a “bit of mischief”.
“I'm certainly of the view that it's not anyone in Te Uru Taumatua that would do that. Those who were originally burning those huts were doing it under instruction.
“There's a legal case on that to protect the final huts that are there, so I don't see it as Te Uru Taumatua, because what would they gain out of it? They'd gain nothing.”