The news comes after reports that employees improperly viewed Jackson's death certificate and accessed sensitive computers.
Michael Jackson did an Interview with MSNBC
He said sheriff's investigators contacted the coroner's staff Friday and planned to handle the inquiry with the district attorney's office.
Whitmore said they were asked to investigate by county supervisors.
Supervisors also have called for a county audit of the coroner's office, said Supervisor Mark Riley-Thomas.
