The BBC engaged in a "major breach" of broadcasting rules by failing to disclose that the presenter of a film about the Gaza conflict was the son of a Hamas official, according to regulatory body Ofcom.
An investigation by Ofcom into the programme Gaza: How to Survive a Warzone has concluded that the programme was "significantly deceptive".
The chief executive of the broadcaster had already issued an apology, noting there had been "a major oversight in relation to accuracy".
Ofcom has ordered the corporation to transmit a evening statement about its conclusions.
"Given this constitutes a major infringement of our rules, we are directing the corporation to air a statement of our findings against it on BBC Two at 21:00, with a schedule to be finalised," the statement read.
'Risk to Erode Credibility'
The watchdog's report declared: "Our investigation determined that the documentary's lack of disclosure that the narrator's male guardian held a role in the Hamas-run authority was materially misleading.
"It meant that the audience did not have essential details which may have been highly relevant to their judgment of the voice and the information he presented.
"Confidence is at the center of the connection between a broadcaster and its viewers, especially for a national broadcasting corporation such as the public broadcaster.
"This failing had the risk to undermine the exceptionally strong amounts of credibility that audiences would have invested in a factual film from the broadcaster about the Israel-Gaza war."
The film was removed from the online platform in last February after the narrator's personal associations were revealed, and in this past July an internal BBC review found it violated the organization's editorial guidelines on truthfulness.
A corporation official stated: "The regulator's decision is in agreement with the results of Peter Johnston's review, that there was a significant failing in the documentary in relation to the BBC's Editorial Guidelines on truthfulness, which reflects regulation 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we agree with the authority's determination in full. We will comply with the directive as soon as the timing and wording are finalised."
