The British broadcaster engaged in a "significant breach" of media regulations by failing to disclose that the presenter of a programme about the Gaza situation was the child of a Hamas representative, according to UK media regulator Ofcom.
An investigation by the media regulator into the programme Gaza: How to Survive a Warzone has concluded that the documentary was "materially misleading".
The head of the BBC had earlier expressed regret, noting there had been "a major oversight in relation to factual correctness".
Ofcom has directed the broadcaster to broadcast a evening statement about its decisions.
"Since this amounts to a serious breach of our code, we are directing the BBC to air a statement of our determinations against it on BBC2 at nine o'clock in the evening, with a schedule to be confirmed," it said.
'Potential to Undermine Trust'
The regulator's statement declared: "The inquiry we conducted determined that the documentary's failure to disclose that the voice's parent served in a position in the Hamas-controlled authority was substantially inaccurate.
"This implied that the audience did not have vital facts which may have been highly relevant to their evaluation of the voice and the details he provided.
"Credibility is at the heart of the connection between a broadcaster and its viewers, especially for a state-funded media outlet such as the British Broadcasting Corporation.
"This oversight had the risk to damage the significantly high amounts of credibility that audiences would have put in a factual film from the broadcaster about the conflict in Gaza."
The documentary was removed from the BBC's streaming service in February after the narrator's family links were revealed, and in the month of July an internal BBC review found it breached the broadcaster's journalistic standards on factual correctness.
A representative for the broadcaster commented: "The regulator's decision is in agreement with the results of the corporation's inquiry, that there was a serious error in the documentary in relation to the corporation's content standards on factual correctness, which corresponds to regulation 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we accept the regulator's ruling in full. We will comply with the penalty as soon as the timing and wording are confirmed."
