The BBC engaged in a "major breach" of industry standards by failing to disclose that the voice of a documentary about the Gaza conflict was the offspring of a Hamas administrator, according to British broadcasting authority Ofcom.
An investigation by the media regulator into the programme Gaza: How to Survive a Warzone has determined that the film was "materially misleading".
The head of the BBC had already issued an apology, stating there had been "a major oversight in relation to accuracy".
Ofcom has directed the BBC to broadcast a prime-time statement about its decisions.
"As this represents a major infringement of our regulations, we are directing the BBC to air a announcement of our determinations against it on BBC Two at nine o'clock in the evening, with a schedule to be determined," the regulator stated.
'Potential to Erode Confidence'
The regulator's report declared: "Our probe determined that the documentary's lack of disclosure that the presenter's father occupied a position in the Hamas-controlled authority was substantially inaccurate.
"This implied that the public did not have critical information which may have been highly relevant to their judgment of the voice and the content he presented.
"Confidence is at the core of the bond between a media organization and its audience, especially for a public service broadcaster such as the public broadcaster.
"This error had the potential to undermine the very considerable levels of trust that viewers would have put in a BBC factual programme about the Israel-Gaza war."
The programme was pulled from iPlayer in February after the presenter's personal associations came to light, and in July an broadcaster's internal assessment concluded it breached the organization's editorial guidelines on truthfulness.
A corporation official stated: "The authority's determination is in accordance with the results of the corporation's inquiry, that there was a significant failing in the documentary in relation to the broadcaster's journalistic policies on factual correctness, which corresponds to Rule 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we accept Ofcom's decision in complete. We will comply with the sanction as soon as the schedule and wording are confirmed."
