The BBC committed a "major breach" of media regulations by failing to disclose that the narrator of a documentary about Gaza was the son of a Hamas representative, as determined by UK media regulator Ofcom.
An inquiry by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has determined that the programme was "significantly deceptive".
The chief executive of the broadcaster had already issued an apology, saying there had been "a major oversight in relation to truthfulness".
The regulator has ordered the broadcaster to broadcast a evening declaration about its findings.
"As this represents a major infringement of our rules, we are directing the corporation to transmit a announcement of our findings against it on BBC Two at 21:00, with a schedule to be confirmed," the regulator stated.
'Potential to Undermine Trust'
The authority's statement said: "The inquiry we conducted concluded that the programme's failure to disclose that the presenter's male guardian served in a position in the Hamas-controlled administration was materially misleading.
"Consequently that the public did not have vital facts which may have been highly relevant to their judgment of the voice and the information he shared.
"Credibility is at the heart of the relationship between a broadcaster and its audience, notably for a state-funded media outlet such as the public broadcaster.
"This failing had the potential to erode the very considerable degrees of confidence that the public would have put in a factual film from the broadcaster about the Gaza conflict."
The film was pulled from the BBC's streaming service in February after the presenter's personal associations emerged, and in the month of July an broadcaster's internal assessment found it violated the broadcaster's content policies on factual correctness.
A corporation official stated: "The Ofcom ruling is in agreement with the findings of Peter Johnston's review, that there was a significant failing in the film in relation to the BBC's Editorial Guidelines on accuracy, which aligns with clause 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we accept Ofcom's decision in complete. We will comply with the directive as soon as the schedule and wording are determined."
