The British broadcaster was found to have committed a "major breach" of media regulations by failing to disclose that the voice of a documentary about the Gaza conflict was the son of a Hamas official, as determined by UK media regulator Ofcom.
An investigation by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has determined that the programme was "materially misleading".
The chief executive of the broadcaster had previously apologised, stating there had been "a major oversight in relation to factual correctness".
The regulator has instructed the corporation to air a prime-time announcement about its decisions.
"As this represents a significant violation of our rules, we are directing the BBC to transmit a statement of our conclusions against it on the BBC's second channel at 9pm, with a date to be determined," it said.
'Possibility to Undermine Confidence'
The regulator's statement declared: "The inquiry we conducted determined that the film's failure to disclose that the voice's parent occupied a position in the Hamas-controlled administration was significantly deceptive.
"This implied that the public did not have essential details which may have been extremely pertinent to their evaluation of the presenter and the content he provided.
"Trust is at the center of the relationship between a media organization and its public, notably for a public service broadcaster such as the BBC.
"This error had the risk to erode the very considerable levels of confidence that viewers would have invested in a documentary produced by the BBC about the Gaza conflict."
The documentary was pulled from the online platform in February after the presenter's personal associations were revealed, and in this past July an internal BBC review concluded it infringed the organization's journalistic standards on truthfulness.
A representative for the broadcaster commented: "The authority's determination is in agreement with the findings of Peter Johnston's review, that there was a serious error in the programme in relation to the BBC's Editorial Guidelines on accuracy, which reflects clause 2.2 of the regulator's media standards.
"We expressed regret for this and we agree with the authority's determination in full. We will comply with the penalty as soon as the schedule and wording are determined."
