The BBC was found to have committed a "serious breach" of media regulations by failing to disclose that the narrator of a programme about the Gaza conflict was the child of a Hamas official, according to 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 chief executive of the broadcaster had previously apologised, saying there had been "a significant failing in relation to factual correctness".
The authority has instructed the BBC to broadcast a evening declaration about its conclusions.
"Given this constitutes a serious breach of our code, we are instructing the corporation to broadcast a announcement of our findings against it on BBC Two at 9pm, with a timing to be finalised," the statement read.
'Potential to Damage Trust'
The watchdog's report said: "Our probe concluded that the film's omission to reveal that the presenter's father served in a position in the Hamas-controlled government was significantly deceptive.
"It meant that the public did not have critical information which may have been highly relevant to their assessment of the narrator and the details he presented.
"Trust is at the center of the bond between a television network and its audience, especially for a public service broadcaster such as the public broadcaster.
"This oversight had the risk to erode the significantly high degrees of trust that the public would have put in a documentary produced by the BBC about the Israel-Gaza war."
The programme was pulled from the BBC's streaming service in last February after the boy's personal associations came to light, and in July an corporation's own inquiry found it infringed the organization's editorial guidelines on accuracy.
A BBC spokesperson commented: "The Ofcom ruling is in line with the results of the internal assessment, that there was a significant failing in the film in relation to the broadcaster's journalistic policies on truthfulness, which corresponds to regulation 2.2 of the regulator's media standards.
"We have apologised for this and we agree with Ofcom's decision in its entirety. We will comply with the directive as soon as the date and wording are confirmed."
