The BBC committed a "major breach" of broadcasting rules by omitting to mention that the voice of a film about Gaza was the child of a Hamas administrator, as ruled by British broadcasting authority Ofcom.
An investigation by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has determined that the film was "materially misleading".
The BBC's director general had already issued an apology, saying there had been "a serious error in relation to factual correctness".
The regulator has instructed the broadcaster to broadcast a peak-time statement about its findings.
"Given this constitutes a major infringement of our regulations, we are directing the BBC to broadcast a statement of our conclusions against it on BBC Two at nine o'clock in the evening, with a schedule to be finalised," the statement read.
'Risk to Damage Credibility'
The regulator's statement said: "Our probe concluded that the documentary's lack of disclosure that the voice's parent served in a position in the Hamas-run government was materially misleading.
"Consequently that the audience did not have essential details which may have been very significant to their judgment of the voice and the details he presented.
"Trust is at the heart of the bond between a television network and its audience, notably for a national broadcasting corporation such as the public broadcaster.
"This oversight had the risk to undermine the very considerable levels of confidence that the public would have invested in a BBC factual programme about the Gaza conflict."
The programme was pulled from the online platform in last February after the presenter's family links emerged, and in this past July an internal BBC review concluded it infringed the corporation's content policies on factual correctness.
A BBC spokesperson stated: "The authority's determination is in line with the results of Peter Johnston's review, that there was a significant failing in the programme in relation to the broadcaster's journalistic policies on accuracy, which aligns with Rule 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we agree with Ofcom's decision in its entirety. We will adhere to the directive as soon as the schedule and language are confirmed."
