The BBC was found to have committed a "serious breach" of industry standards by failing to disclose that the voice of a programme about the Gaza conflict was the child of a Hamas administrator, according to UK media regulator Ofcom.
An investigation by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has concluded that the programme was "significantly deceptive".
The head of the BBC had already issued an apology, saying there had been "a major oversight in relation to truthfulness".
The authority has instructed the broadcaster to air a evening statement about its findings.
"Given this constitutes a serious breach of our code, we are directing the broadcaster to air a message of our determinations against it on BBC2 at nine o'clock in the evening, with a timing to be confirmed," the statement read.
'Possibility to Undermine Credibility'
The regulator's statement declared: "Our investigation concluded that the film's lack of disclosure that the voice's male guardian served in a role in the Hamas-controlled administration was significantly deceptive.
"Consequently that the public did not have critical information which may have been very significant to their evaluation of the presenter and the content he presented.
"Credibility is at the heart of the connection between a television network and its audience, particularly for a public service broadcaster such as the British Broadcasting Corporation.
"This failing had the risk to damage the exceptionally strong levels of credibility that the public would have placed in a BBC factual programme about the Israel-Gaza war."
The film was removed from the BBC's streaming service in the month of February after the narrator's personal associations came to light, and in July an corporation's own inquiry concluded it infringed the corporation's content policies on truthfulness.
A corporation official said: "The Ofcom ruling is in accordance with the results of the corporation's inquiry, that there was a significant failing in the film in relation to the broadcaster's journalistic policies on accuracy, which corresponds to Rule 2.2 of the regulator's media standards.
"We expressed regret for this and we comply with Ofcom's decision in full. We will comply with the directive as soon as the timing and wording are confirmed."
