The BBC was found to have committed a "major breach" of broadcasting rules by omitting to mention that the narrator of a film about the Gaza situation was the son of a Hamas administrator, as ruled by British broadcasting authority Ofcom.
An inquiry by the media regulator into the programme Gaza: How to Survive a Warzone has determined that the film was "significantly deceptive".
The head of the BBC had already issued an apology, stating there had been "a significant failing in relation to factual correctness".
Ofcom has ordered the corporation to air a prime-time statement about its decisions.
"As this represents a significant violation of our code, we are instructing the broadcaster to broadcast a statement of our findings against it on the BBC's second channel at 21:00, with a timing to be finalised," the statement read.
'Potential to Undermine Credibility'
The watchdog's announcement declared: "Our probe determined that the programme's lack of disclosure that the narrator's parent served in a post in the Hamas-run authority was significantly deceptive.
"Consequently that the audience did not have vital facts which may have been very significant to their judgment of the voice and the details he presented.
"Confidence is at the center of the connection between a media organization and its viewers, notably for a public service broadcaster such as the public broadcaster.
"This error had the risk to undermine the exceptionally strong levels of confidence that the public would have placed in a factual film from the broadcaster about the Gaza conflict."
The programme was removed from the online platform in last February after the presenter's familial connections emerged, and in this past July an corporation's own inquiry determined it breached the organization's content policies on factual correctness.
A BBC spokesperson stated: "The regulator's decision is in line with the results of Peter Johnston's review, that there was a major oversight in the programme in relation to the corporation's content standards on factual correctness, which reflects Rule 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we agree with the authority's determination in complete. We will adhere to the sanction as soon as the schedule and wording are determined."
