The BBC committed a "significant breach" of broadcasting rules by failing to disclose that the presenter of a programme about Gaza was the son of a Hamas official, as ruled by UK media regulator Ofcom.
An investigation by the media regulator into the documentary titled Gaza: How to Survive a Warzone has concluded that the documentary was "substantially inaccurate".
The chief executive of the broadcaster had already issued an apology, saying there had been "a serious error in relation to truthfulness".
The authority has instructed the BBC to air a peak-time statement about its findings.
"Since this amounts to a significant violation of our regulations, we are directing the BBC to air a announcement of our determinations against it on BBC Two at 9pm, with a timing to be finalised," the statement read.
'Potential to Undermine Confidence'
The watchdog's report declared: "The inquiry we conducted determined that the programme's failure to disclose that the presenter's parent held a position in the Hamas-run government was significantly deceptive.
"It meant that the viewers did not have critical information which may have been very significant to their evaluation of the presenter and the information he shared.
"Confidence is at the center of the relationship between a television network and its public, especially for a national broadcasting corporation such as the public broadcaster.
"This error had the risk to damage the very considerable amounts of confidence that viewers would have put in a documentary produced by the BBC about the Israel-Gaza war."
The documentary was pulled from the BBC's streaming service in the month of February after the narrator's familial connections emerged, and in July an broadcaster's internal assessment determined it infringed the corporation's journalistic standards on factual correctness.
A BBC spokesperson commented: "The Ofcom ruling is in accordance with the results of Peter Johnston's review, that there was a significant failing in the programme in relation to the BBC's Editorial Guidelines on accuracy, which corresponds to Rule 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we comply with the regulator's ruling in its entirety. We will adhere to the sanction as soon as the schedule and language are confirmed."
