The BBC committed a "serious breach" of industry standards by not revealing that the presenter of a documentary about the Gaza situation was the son of a Hamas administrator, as determined by UK media regulator Ofcom.
An probe by the media regulator into the documentary titled Gaza: How to Survive a Warzone has concluded that the film was "substantially inaccurate".
The BBC's director general had earlier expressed regret, stating there had been "a major oversight in relation to factual correctness".
Ofcom has instructed the BBC to air a prime-time announcement about its conclusions.
"As this represents a serious breach of our code, we are directing the corporation to transmit a statement of our determinations against it on BBC Two at 9pm, with a date to be finalised," the statement read.
'Potential to Erode Confidence'
The watchdog's report stated: "Our investigation concluded that the programme's failure to disclose that the presenter's male guardian occupied a role in the Hamas-administered administration was significantly deceptive.
"Consequently that the audience did not have essential details which may have been extremely pertinent to their judgment of the narrator and the details he presented.
"Confidence is at the center of the relationship between a broadcaster and its viewers, notably for a state-funded media outlet such as the public broadcaster.
"This failing had the risk to damage the significantly high amounts of confidence that viewers would have placed in a documentary produced by the BBC about the Gaza conflict."
The film was removed from the BBC's streaming service in February after the narrator's familial connections were revealed, and in July an corporation's own inquiry determined it breached the corporation's journalistic standards on accuracy.
A BBC spokesperson commented: "The authority's determination is in agreement with the conclusions of the corporation's inquiry, that there was a significant failing in the documentary in relation to the corporation's content standards on factual correctness, which corresponds to clause 2.2 of the regulator's media standards.
"We have apologised for this and we comply with the authority's determination in complete. We will follow the sanction as soon as the date and language are confirmed."
