The BBC was found to have committed a "serious breach" of media regulations by omitting to mention that the narrator of a film about the Gaza conflict was the child of a Hamas official, as ruled by regulatory body Ofcom.
An inquiry by Ofcom into the documentary titled Gaza: How to Survive a Warzone has found that the documentary was "materially misleading".
The chief executive of the broadcaster had already issued an apology, noting there had been "a serious error in relation to accuracy".
The regulator has ordered the BBC to broadcast a peak-time statement about its conclusions.
"Given this constitutes a serious breach of our code, we are ordering the BBC to broadcast a message of our determinations against it on BBC Two at 9pm, with a schedule to be determined," it said.
'Potential to Damage Credibility'
The regulator's report declared: "Our probe found that the film's failure to disclose that the presenter's parent served in a role in the Hamas-run administration was materially misleading.
"It meant that the public did not have essential details which may have been extremely pertinent to their assessment of the presenter and the details he presented.
"Confidence is at the center of the relationship between a television network and its public, notably for a public service broadcaster such as the BBC.
"This oversight had the risk to damage the significantly high degrees of credibility that viewers would have put in a factual film from the broadcaster about the Israel-Gaza war."
The film was removed from the online platform in last February after the presenter's familial connections were revealed, and in July an broadcaster's internal assessment found it violated the broadcaster's journalistic standards on accuracy.
A BBC spokesperson commented: "The regulator's decision is in agreement with the results of Peter Johnston's review, that there was a serious error in the documentary in relation to the corporation's content standards on truthfulness, which corresponds to Rule 2.2 of the regulator's media standards.
"We have apologised for this and we agree with the authority's determination in its entirety. We will adhere to the sanction as soon as the date and wording are confirmed."
