The BBC was found to have committed a "major breach" of industry standards by not revealing that the narrator of a film about the Gaza conflict was the son of a Hamas administrator, as ruled by UK media regulator Ofcom.
An investigation by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has concluded that the film was "significantly deceptive".
The BBC's director general had already issued an apology, stating there had been "a major oversight in relation to truthfulness".
The authority has ordered the corporation to air a prime-time statement about its conclusions.
"Given this constitutes a major infringement of our code, we are directing the broadcaster to broadcast a statement of our determinations against it on the BBC's second channel at 21:00, with a date to be determined," it said.
'Risk to Erode Confidence'
The watchdog's report said: "The inquiry we conducted determined that the documentary's failure to disclose that the voice's parent served in a role in the Hamas-controlled authority was significantly deceptive.
"Consequently that the audience did not have critical information which may have been extremely pertinent to their assessment of the presenter and the information he presented.
"Confidence is at the core of the bond between a broadcaster and its public, particularly for a public service broadcaster such as the British Broadcasting Corporation.
"This oversight had the possibility to undermine the very considerable levels of credibility that the public would have placed in a BBC factual programme about the Gaza conflict."
The film was pulled from iPlayer in February after the presenter's personal associations came to light, and in July an broadcaster's internal assessment determined it infringed the organization's journalistic standards on accuracy.
A corporation official said: "The authority's determination is in line with the conclusions of Peter Johnston's review, that there was a significant failing in the film in relation to the broadcaster's journalistic policies on factual correctness, which corresponds to regulation 2.2 of the regulator's media standards.
"We issued an apology for this and we accept Ofcom's decision in complete. We will comply with the sanction as soon as the date and wording are finalised."
