The BBC committed a "significant breach" of media regulations by failing to disclose that the presenter of a documentary about the Gaza situation was the offspring of a Hamas administrator, as determined by UK media regulator Ofcom.
An investigation by Ofcom into Gaza: How to Survive a Warzone has found that the programme was "materially misleading".
The chief executive of the broadcaster had previously apologised, stating there had been "a serious error in relation to accuracy".
The authority has ordered the broadcaster to transmit a evening statement about its decisions.
"Since this amounts to a major infringement of our code, we are directing the BBC to broadcast a statement of our findings against it on BBC2 at 9pm, with a schedule to be confirmed," the regulator stated.
'Risk to Erode Confidence'
The watchdog's announcement stated: "The inquiry we conducted found that the programme's failure to disclose that the presenter's male guardian occupied a position in the Hamas-run administration was materially misleading.
"Consequently that the public did not have essential details which may have been extremely pertinent to their evaluation of the voice and the details he shared.
"Confidence is at the heart of the connection between a television network and its audience, notably for a public service broadcaster such as the BBC.
"This error had the potential to erode the very considerable levels of trust that audiences would have placed in a documentary produced by the BBC about the conflict in Gaza."
The film was pulled from iPlayer in last February after the narrator's family links were revealed, and in this past July an broadcaster's internal assessment concluded it violated the corporation's journalistic standards on truthfulness.
A corporation official stated: "The regulator's decision is in accordance with the results of the internal assessment, that there was a serious error in the documentary in relation to the broadcaster's journalistic policies on accuracy, which corresponds to Rule 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we accept Ofcom's decision in complete. We will adhere to the penalty as soon as the schedule and wording are confirmed."
