The British broadcaster engaged in a "major breach" of broadcasting rules by failing to disclose that the presenter of a programme about the Gaza conflict was the child of a Hamas representative, according to British broadcasting authority Ofcom.
An investigation by Ofcom into Gaza: How to Survive a Warzone has concluded that the programme was "significantly deceptive".
The head of the BBC had previously apologised, saying there had been "a serious error in relation to truthfulness".
Ofcom has directed the corporation to transmit a evening statement about its decisions.
"Given this constitutes a significant violation of our rules, we are ordering the BBC to air a statement of our findings against it on BBC2 at 9pm, with a schedule to be finalised," it said.
'Possibility to Damage Trust'
The authority's announcement stated: "Our probe determined that the film's lack of disclosure that the narrator's father served in a post in the Hamas-controlled administration was significantly deceptive.
"Consequently that the viewers did not have vital facts which may have been highly relevant to their judgment of the presenter and the details he presented.
"Trust is at the heart of the relationship between a television network and its viewers, notably for a national broadcasting corporation such as the public broadcaster.
"This error had the possibility to damage the exceptionally strong levels of trust that the public would have invested in a factual film from the broadcaster about the Gaza conflict."
The documentary was withdrawn from the online platform in February after the presenter's familial connections emerged, and in July an broadcaster's internal assessment determined it violated the corporation's content policies on accuracy.
A representative for the broadcaster said: "The authority's determination is in accordance with the conclusions of Peter Johnston's review, that there was a major oversight in the film in relation to the BBC's Editorial Guidelines on truthfulness, which reflects regulation 2.2 of the regulator's media standards.
"We have apologised for this and we accept the authority's determination in its entirety. We will follow the penalty as soon as the timing and language are confirmed."
