The BBC committed a "major breach" of industry standards by not revealing that the voice of a documentary about the Gaza conflict was the offspring of a Hamas official, according to UK media regulator Ofcom.
An inquiry by Ofcom into the programme Gaza: How to Survive a Warzone has determined that the documentary was "substantially inaccurate".
The head of the BBC had previously apologised, saying there had been "a major oversight in relation to factual correctness".
Ofcom has ordered the broadcaster to air a prime-time announcement about its findings.
"As this represents a significant violation of our rules, we are ordering the broadcaster to air a announcement of our findings against it on BBC Two at 21:00, with a date to be confirmed," the regulator stated.
'Possibility to Erode Credibility'
The regulator's statement declared: "Our probe concluded that the documentary's omission to reveal that the presenter's male guardian occupied a position in the Hamas-administered administration was materially misleading.
"Consequently that the public did not have critical information which may have been extremely pertinent to their judgment of the presenter and the details he provided.
"Credibility is at the center of the connection between a television network and its viewers, notably for a state-funded media outlet such as the public broadcaster.
"This failing had the possibility to damage the significantly high degrees of confidence that the public would have put in a documentary produced by the BBC about the Gaza conflict."
The programme was withdrawn from the BBC's streaming service in last February after the presenter's familial connections emerged, and in the month of July an broadcaster's internal assessment found it violated the corporation's editorial guidelines on factual correctness.
A representative for the broadcaster commented: "The regulator's decision is in line with the findings of the internal assessment, that there was a serious error in the programme in relation to the corporation's content standards on factual correctness, which corresponds to Rule 2.2 of the regulator's media standards.
"We issued an apology for this and we comply with the authority's determination in complete. We will comply with the penalty as soon as the timing and wording are determined."
