However, the witness interviewed by Newsnight withdrew his allegations against McAlpine, and he had been confused after police showed him the wrong photo of his abuser.
McAlpine also denied the allegations.
"The BBC allowed lazy and over-enthusiastic journalists to prepare a program which, while not naming anyone pointed the finger at an innocent man as a pedophile," British social and media commentator Damian Thompson, the blogs editor at the Daily Telegraph newspaper, told Xinhua.
"We now know this is based on an entirely mistaken case of identity. But there has been an extraordinary level of incompetence by BBC management, whose chief directive, it seems to me, is to protect their own reputations or to shift the burden of responsibility further down the chain," he added.
The latest error came after a scandal that erupted at the beginning of October, when one of the BBC's longest-serving and well-known presenters was revealed as a pedophile who preyed on children in children's homes, hospitals, and it was alleged on BBC premises around the times of the recording of his hit TV shows.
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