BBC inquiry must answer Stuart Hall claims, says Lord Patten
5 May 2013 Last updated at 19:08 BST
The BBC must "provide answers" as to how broadcaster Stuart Hall was able to abuse girls while working at the corporation, Lord Patten has said.
News reports have claimed fellow BBC staff may have helped Hall, who has admitted indecently assaulting 13 girls, gain access to victims.
The BBC Trust chairman said the claims were "appalling" and would be addressed by Dame Janet Smith's ongoing inquiry.
Judith Moritz reports.