The BBC committed a "major breach" of broadcasting rules by omitting to mention that the presenter of a documentary about the Gaza conflict was the child of a Hamas administrator, as ruled by regulatory body Ofcom.
An probe by Ofcom into the programme Gaza: How to Survive a Warzone has found that the documentary was "significantly deceptive".
The head of the BBC had previously apologised, saying there had been "a major oversight in relation to factual correctness".
The regulator has directed the broadcaster to broadcast a prime-time statement about its conclusions.
"Given this constitutes a major infringement of our code, we are instructing the corporation to air a message of our findings against it on BBC Two at nine o'clock in the evening, with a date to be finalised," the regulator stated.
'Risk to Erode Confidence'
The authority's report stated: "Our investigation determined that the documentary's lack of disclosure that the narrator's father occupied a role in the Hamas-run authority was significantly deceptive.
"This implied that the public did not have vital facts which may have been very significant to their evaluation of the presenter and the details he provided.
"Trust is at the center of the bond between a broadcaster and its public, particularly for a state-funded media outlet such as the public broadcaster.
"This error had the possibility to undermine the very considerable degrees of confidence that audiences would have put in a documentary produced by the BBC about the conflict in Gaza."
The programme was removed from the BBC's streaming service in last February after the narrator's familial connections emerged, and in this past July an internal BBC review found it infringed the broadcaster's journalistic standards on factual correctness.
A BBC spokesperson stated: "The authority's determination is in agreement with the findings of the corporation's inquiry, that there was a major oversight in the programme in relation to the broadcaster's journalistic policies on accuracy, which aligns with Rule 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we accept the regulator's ruling in full. We will adhere to the directive as soon as the schedule and wording are confirmed."
