The BBC was found to have committed a "serious breach" of broadcasting rules by failing to disclose that the narrator of a documentary about the Gaza situation was the offspring of a Hamas official, according to UK media regulator Ofcom.
An investigation by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has found that the film was "significantly deceptive".
The head of the BBC had earlier expressed regret, stating there had been "a major oversight in relation to truthfulness".
The regulator has instructed the corporation to broadcast a peak-time statement about its findings.
"As this represents a major infringement of our regulations, we are ordering the BBC to broadcast a announcement of our determinations against it on BBC Two at 21:00, with a timing to be determined," it said.
The watchdog's report stated: "Our investigation found that the programme's failure to disclose that the presenter's parent served in a role in the Hamas-administered authority was significantly deceptive.
"This implied that the audience did not have vital facts which may have been extremely pertinent to their evaluation of the voice and the information he presented.
"Trust is at the center of the connection between a broadcaster and its viewers, especially for a state-funded media outlet such as the British Broadcasting Corporation.
"This error had the risk to damage the exceptionally strong levels of trust that viewers would have invested in a factual film from the broadcaster about the Gaza conflict."
The documentary was pulled from the BBC's streaming service in the month of February after the narrator's familial connections were revealed, and in July an broadcaster's internal assessment found it violated the corporation's editorial guidelines on factual correctness.
A corporation official stated: "The regulator's decision is in agreement with the conclusions 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 regulation 2.2 of the regulator's media standards.
"We expressed regret for this and we accept the regulator's ruling in complete. We will adhere to the penalty as soon as the schedule and wording are determined."
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