The BBC engaged in a "serious breach" of industry standards by failing to disclose that the narrator of a film about the Gaza conflict was the offspring of a Hamas representative, as ruled by UK media regulator Ofcom.
An probe by the media regulator into the programme Gaza: How to Survive a Warzone has determined that the programme was "materially misleading".
The head of the BBC had earlier expressed regret, saying there had been "a significant failing in relation to truthfulness".
Ofcom has instructed the corporation to transmit a prime-time announcement about its findings.
"Given this constitutes a significant violation of our rules, we are ordering the broadcaster to broadcast a statement of our findings against it on BBC2 at 9pm, with a timing to be confirmed," the statement read.
'Risk to Undermine Confidence'
The authority's statement stated: "The inquiry we conducted determined that the film's lack of disclosure that the voice's father held a position in the Hamas-run authority was materially misleading.
"It meant that the public did not have critical information which may have been extremely pertinent to their judgment of the narrator and the information he presented.
"Credibility is at the heart of the connection between a media organization and its audience, especially for a national broadcasting corporation such as the BBC.
"This error had the risk to damage the exceptionally strong levels of trust that the public would have put in a factual film from the broadcaster about the Israel-Gaza war."
The programme was withdrawn from the BBC's streaming service in last February after the boy's familial connections were revealed, and in the month of July an broadcaster's internal assessment concluded it breached the organization's editorial guidelines on truthfulness.
A representative for the broadcaster said: "The authority's determination is in agreement with the results of Peter Johnston's review, that there was a significant failing in the film in relation to the corporation's content standards on accuracy, which corresponds to regulation 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we comply with the regulator's ruling in complete. We will adhere to the penalty as soon as the date and wording are determined."
