The British broadcaster committed a "serious breach" of media regulations by failing to disclose that the presenter of a film about the Gaza conflict was the child of a Hamas official, as determined by UK media regulator Ofcom.
An probe by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has concluded that the film was "significantly deceptive".
The BBC's director general had earlier expressed regret, noting there had been "a serious error in relation to accuracy".
Ofcom has directed the BBC to broadcast a prime-time announcement about its findings.
"Since this amounts to a major infringement of our regulations, we are directing the corporation to transmit a announcement of our findings against it on the BBC's second channel at nine o'clock in the evening, with a schedule to be finalised," the regulator stated.
'Potential to Undermine Confidence'
The regulator's report said: "Our probe found that the documentary's lack of disclosure that the voice's parent held a position in the Hamas-run authority was substantially inaccurate.
"This implied that the public did not have critical information which may have been highly relevant to their judgment of the voice and the information he presented.
"Trust is at the core of the connection between a media organization and its audience, especially for a national broadcasting corporation such as the public broadcaster.
"This oversight had the risk to undermine the exceptionally strong degrees of confidence that audiences would have invested in a factual film from the broadcaster about the conflict in Gaza."
The programme was removed from the BBC's streaming service in last February after the narrator's familial connections were revealed, and in July an corporation's own inquiry found it violated the corporation's editorial guidelines on accuracy.
A representative for the broadcaster commented: "The regulator's decision is in line with the conclusions of Peter Johnston's review, that there was a major oversight in the programme in relation to the BBC's Editorial Guidelines on accuracy, which aligns with clause 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we accept Ofcom's decision in its entirety. We will adhere to the directive as soon as the timing and wording are determined."
