The BBC was found to have committed a "serious breach" of broadcasting rules by not revealing that the narrator of a film about Gaza was the son of a Hamas administrator, according to UK media regulator Ofcom.
An investigation by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has concluded that the film was "significantly deceptive".
The chief executive of the broadcaster had previously apologised, noting there had been "a serious error in relation to factual correctness".
The authority has ordered the corporation to transmit a prime-time announcement about its conclusions.
"Since this amounts to a significant violation of our regulations, we are directing the corporation to broadcast a announcement of our findings against it on the BBC's second channel at nine o'clock in the evening, with a timing to be confirmed," it said.
'Risk to Erode Trust'
The watchdog's announcement said: "Our investigation determined that the film's omission to reveal that the voice's parent held a post in the Hamas-controlled government was substantially inaccurate.
"Consequently that the audience did not have essential details which may have been highly relevant to their assessment of the narrator and the information he shared.
"Confidence is at the core of the connection between a media organization and its public, particularly for a national broadcasting corporation such as the public broadcaster.
"This failing had the potential to undermine the very considerable levels of credibility that the public would have put in a factual film from the broadcaster about the conflict in Gaza."
The programme was removed from iPlayer in the month of February after the presenter's family links were revealed, and in the month of July an internal BBC review found it infringed the corporation's content policies on accuracy.
A corporation official said: "The regulator's decision is in accordance with the findings of the internal assessment, that there was a serious error in the film in relation to the BBC's Editorial Guidelines on factual correctness, which aligns with regulation 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we comply with the authority's determination in complete. We will comply with the directive as soon as the schedule and wording are confirmed."
