The BBC engaged in a "significant breach" of broadcasting rules by failing to disclose that the presenter of a programme about the Gaza conflict was the son of a Hamas official, as ruled by regulatory body Ofcom.
An probe by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has found that the documentary was "substantially inaccurate".
The chief executive of the broadcaster had previously apologised, stating there had been "a significant failing in relation to factual correctness".
The regulator has instructed the broadcaster to transmit a prime-time statement about its findings.
"Given this constitutes a significant violation of our regulations, we are instructing the corporation to transmit a statement of our conclusions against it on BBC Two at 21:00, with a schedule to be confirmed," it said.
'Possibility to Undermine Credibility'
The authority's statement said: "The inquiry we conducted found that the programme's failure to disclose that the presenter's father occupied a role in the Hamas-administered government was materially misleading.
"This implied that the audience did not have essential details which may have been very significant to their judgment of the voice and the content he provided.
"Confidence is at the heart of the bond between a television network and its audience, notably for a public service broadcaster such as the British Broadcasting Corporation.
"This oversight had the possibility to damage the significantly high amounts of credibility that audiences would have invested in a BBC factual programme about the conflict in Gaza."
The programme was pulled from the BBC's streaming service in February after the presenter's family links emerged, and in this past July an corporation's own inquiry determined it infringed the corporation's content policies on truthfulness.
A corporation official commented: "The Ofcom ruling is in agreement with the findings of the internal assessment, that there was a significant failing in the programme in relation to the broadcaster's journalistic policies on accuracy, which corresponds to Rule 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we agree with Ofcom's decision in complete. We will follow the directive as soon as the timing and wording are finalised."
