Vic Freedom of Information watchdog probed

Victoria's Freedom of Information Commissioner Lynne Bertolini has been investigated over a "serious" allegation, which is yet to be revealed.

The Andrews government has been handed the results of the investigation, but its finding or any detail of the allegation is yet to be made public.

It was revealed by Department of Premier and Cabinet secretary Chris Eccles during opposition questioning at a parliamentary committee.

"There were certain matters that were brought to my attention - and it's not appropriate to disclose the detail - which I consider to be sufficiently serious to ... initiate an inquiry," Mr Eccles told the Public Accounts and Estimates Committee on Thursday.

"That inquiry is on foot and the matter is before government."

Former Public Sector Standards Commissioner Peter Allen led the investigation.

An Andrews government spokesman confirmed Mr Allen's report was under consideration.