The BBC and South Yorkshire Police have been summoned to appear before MPs to explain how the broadcaster knew Sir Cliff Richard's home was to be searched, the BBC reported.
Home Affairs Select Committee chairman Keith Vaz gave both institutions a deadline of today at midday to reply to his letters.
It comes after the singer's Berkshire apartment was searched by police as part of investigations into an alleged sexual offence which took place during the 80s - allegations Sir Cliff has vehemently denied.
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His mother Princess Diana was killed in a car crash in Paris in 1997 when he was just 12 and his brother William was 15.
The 21-year-old, who was arrested on Sunday, also allegedly injured two other people in the attack in the German city of Reutlingen.
She was going to the aid of a family member who got out of the car in the middle of the park and was dragged away by a different tiger.