LONDON (Reuters) - The head of Britain’s BBC said on Monday the corporation would hold an inquiry into how the broadcaster secured a famous 1995 interview with the late Princess Diana, amid accusations from her brother she had been tricked into taking part.During the interview, which was watched by more than 20 million viewers in Britain, Diana shocked the nation by admitting to an affair and giving details of her failed marriage to heir-to-the-throne Prince Charles. “The BBC is taking this very seriously and we want to get to the truth,” Tim Davie, the BBC’s director general said in a statement about Spencer’s claims. “We are in the process of commissioning a robust and independent investigation.” This month, her brother Charles Spencer said the BBC had failed to apologise for what he said were forged documents and “other deceit” which led him to introduce journalist Martin Bashir to Diana. The Daily Mail has also published what it said were notes Spencer took during a meeting with Bashir and Diana in 1995, in which the newspaper says the journalist made a series of allegations in an attempt to obtain the interview. These included claims Diana was being bugged by the security services, that two senior aides were being paid to provide information about her, and that Bashir had provided faked bank statements to back this up.