The BBC's Director-General Tim Davie is dedicated to investigating the circumstances of a notorious 1996 interview with Princess Diana.
In it, Princess Diana spoke with journalist Martin Bashir and lifted the lid on her failed marriage with Prince Charles.
CNN reports Bashir has long been alleged to have used forged documents to convince the Princess to do the interview.
The documents suggested the palace staff were working against Princess Diana and being paid to spy on her.
