The BBC was found to have committed a "serious breach" of industry standards by omitting to mention that the voice of a documentary about the Gaza conflict was the child of a Hamas administrator, according to British broadcasting authority Ofcom.
An probe by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has determined that the film was "significantly deceptive".
The chief executive of the broadcaster had earlier expressed regret, saying there had been "a major oversight in relation to accuracy".
The regulator has ordered the corporation to broadcast a prime-time declaration about its findings.
"Given this constitutes a serious breach of our rules, we are ordering the broadcaster to transmit a message of our conclusions against it on BBC Two at 9pm, with a date to be finalised," the statement read.
'Potential to Damage Trust'
The authority's statement said: "Our investigation concluded that the documentary's lack of disclosure that the narrator's parent occupied a role in the Hamas-run government was materially misleading.
"It meant that the audience did not have vital facts which may have been extremely pertinent to their judgment of the voice and the content he presented.
"Trust is at the center of the relationship between a broadcaster and its audience, particularly for a national broadcasting corporation such as the public broadcaster.
"This oversight had the possibility to undermine the significantly high degrees of trust that the public would have put in a documentary produced by the BBC about the Israel-Gaza war."
The film was pulled from the online platform in the month of February after the presenter's familial connections came to light, and in this past July an internal BBC review determined it breached the broadcaster's editorial guidelines on accuracy.
A representative for the broadcaster said: "The regulator's decision is in accordance with the results of the corporation's inquiry, that there was a major oversight in the programme in relation to the corporation's content standards on factual correctness, which corresponds to regulation 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we comply with the regulator's ruling in its entirety. We will comply with the sanction as soon as the date and wording are confirmed."
