The BBC committed a "significant breach" of media regulations by not revealing that the presenter of a film about Gaza was the offspring of a Hamas official, as ruled by regulatory body Ofcom.
An inquiry by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has determined that the film was "materially misleading".
The head of the BBC had already issued an apology, stating there had been "a major oversight in relation to factual correctness".
Ofcom has instructed the corporation to broadcast a evening statement about its conclusions.
"Given this constitutes a significant violation of our code, we are instructing the corporation to air a statement of our findings against it on BBC Two at 9pm, with a schedule to be finalised," the statement read.
'Potential to Damage Confidence'
The watchdog's announcement declared: "The inquiry we conducted found that the documentary's failure to disclose that the narrator's parent served in a role in the Hamas-administered government was significantly deceptive.
"It meant that the public did not have critical information which may have been highly relevant to their judgment of the voice and the information he provided.
"Confidence is at the core of the relationship between a media organization and its audience, particularly for a public service broadcaster such as the public broadcaster.
"This failing had the possibility to erode the very considerable degrees of confidence that audiences would have invested in a documentary produced by the BBC about the Gaza conflict."
The film was removed from the online platform in February after the narrator's family links were revealed, and in this past July an internal BBC review concluded it breached the corporation's content policies on truthfulness.
A representative for the broadcaster stated: "The authority's determination is in line with the findings of the corporation's inquiry, that there was a serious error in the documentary in relation to the corporation's content standards on truthfulness, which aligns with clause 2.2 of the regulator's media standards.
"We have apologised for this and we accept the authority's determination in complete. We will comply with the directive as soon as the timing and wording are confirmed."
