The BBC engaged in a "significant breach" of media regulations by failing to disclose that the narrator of a programme about the Gaza situation was the child of a Hamas representative, as ruled by British broadcasting authority Ofcom.
An inquiry by the media regulator into the documentary titled Gaza: How to Survive a Warzone has found that the film was "significantly deceptive".
The head of the BBC had earlier expressed regret, stating there had been "a serious error in relation to truthfulness".
The authority has instructed the corporation to air a prime-time announcement about its conclusions.
"Given this constitutes a serious breach of our rules, we are instructing the BBC to air a announcement of our determinations against it on BBC2 at 9pm, with a timing to be confirmed," the regulator stated.
'Potential to Undermine Credibility'
The authority's statement stated: "The inquiry we conducted determined that the documentary's omission to reveal that the voice's father held a role in the Hamas-controlled administration was materially misleading.
"This implied that the viewers did not have critical information which may have been extremely pertinent to their evaluation of the presenter and the content he presented.
"Credibility is at the center of the relationship between a media organization and its public, notably for a public service broadcaster such as the BBC.
"This oversight had the possibility to damage the very considerable amounts of trust that viewers would have placed in a BBC factual programme about the Israel-Gaza war."
The documentary was removed from iPlayer in the month of February after the presenter's family links came to light, and in July an internal BBC review found it violated the broadcaster's editorial guidelines on factual correctness.
A corporation official stated: "The Ofcom ruling is in line with the findings of the internal assessment, that there was a major oversight in the film in relation to the BBC's Editorial Guidelines on accuracy, which reflects clause 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we agree with the regulator's ruling in complete. We will comply with the directive as soon as the date and wording are determined."
