London:An independent inquiry has revealed that the BBC "fell below its high standards of integrity and transparency" over the 1995 interview with the late Princess Diana.
The inquiry revealed on Thursday that former BBC reporter Martin Bashir had acted in a "deceitful" way and faked documents to obtain the interview while the broadcaster's own internal probe in 1996 into what happened was "woefully ineffective", Xinhua news agency.
The independent inquiry, by retired judge Lord Dyson, was commissioned by the broadcaster last year, after Diana's brother, Earl Spencer went public with allegations about how the interview was obtained.
It found Bashir mocked up fake bank statements that falsely suggested individuals were being paid for keeping the Princess, who died in a car crash in France 1997, under surveillance.
He later showed the fake documents to Spencer, to gain his trust in order to gain access to the Princess of Wales and persuade her to agree to give the interview.
Read:Ex-judge to lead probe into BBC Diana interview
The BBC carried out its own investigation into the issue in 1996, but it "fell short of the high standards of integrity and transparency", according to the inquiry.
In response to the findings, the British broadcaster sent written apologies to Princes William and Harry, as well as the Prince of Wales Charles and Spencer.
The BBC's incumbent Director-General, Tim Davie, said: "Although the report states that Diana, Princess of Wales, was keen on the idea of an interview with the BBC, it is clear that the process for securing the interview fell far short of what audiences have a right to expect.