Jackson's doctor requests witnesses to be barred

Prosecutors in the trial of Michael Jackson’s doctor want to block testimony relating to claims that the late singer molested children.

Lawyers have asked Judge Michael Pastor to bar Steve Robel – a key investigator in the 2005 allegations against the ‘Thriller’ hitmaker – from testifying as a defence witness for Dr. Conrad Murray, who is accused of the involuntary manslaughter of the star.