The British broadcaster engaged in a "serious breach" of media regulations by omitting to mention that the narrator of a documentary about Gaza was the offspring of a Hamas representative, as determined by UK media regulator Ofcom.
An investigation by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has concluded that the film was "significantly deceptive".
The chief executive of the broadcaster had earlier expressed regret, noting there had been "a significant failing in relation to factual correctness".
The regulator has directed the BBC to broadcast a evening statement about its findings.
"As this represents a significant violation of our code, we are instructing the corporation to air a announcement of our findings against it on BBC Two at nine o'clock in the evening, with a timing to be confirmed," the statement read.
'Possibility to Undermine Confidence'
The authority's announcement stated: "Our investigation determined that the programme's failure to disclose that the presenter's parent occupied a post in the Hamas-controlled administration was substantially inaccurate.
"It meant that the viewers did not have vital facts which may have been very significant to their judgment of the narrator and the information he presented.
"Confidence is at the heart of the relationship between a broadcaster and its audience, especially for a state-funded media outlet such as the public broadcaster.
"This oversight had the risk to erode the very considerable amounts of credibility that the public would have put in a BBC factual programme about the Gaza conflict."
The documentary was pulled from iPlayer in the month of February after the presenter's familial connections emerged, and in July an broadcaster's internal assessment concluded it infringed the corporation's content policies on accuracy.
A corporation official stated: "The Ofcom ruling is in agreement with the findings of the corporation's inquiry, that there was a significant failing in the programme in relation to the broadcaster's journalistic policies on accuracy, which reflects regulation 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we accept the regulator's ruling in its entirety. We will follow the penalty as soon as the date and wording are finalised."
