The BBC has said a total of five complaints have been made about Russell Brand's behaviour while he hosted radio shows between 2006 and 2008.
Two of these complaints have been made in the last two months, since a review of his time at the BBC was launched.
It is understood those two complaints relate to his workplace conduct, and are not of a serious sexual nature.
The other three were made before he was publicly accused in September of rape and sexual assault, which he denies.
One relates to a previously reported allegation of misconduct, first made in 2019, while on BBC premises in Los Angeles in 2008.
The final two allegations were made between 2006 and 2008, when Brand was working as a radio presenter.
The BBC's director of editorial complaints and reviews, Peter Johnston, is looking into Brand's behaviour at the time, whether managers knew about ay allegations, and what action they took.
Earlier this year, the comedian and actor was accused of rape and sexual assaults between 2006 and 2013, which he strongly denies.
The original allegations
formed part of an investigation by the Sunday Times, Times and Channel 4's Dispatches earlier this year.
It also included claims about his behaviour towards women and his workplace conduct over the same period.
Brand worked for BBC Radio 2 and 6 Music between 2006 and 2008.
The BBC announced in September that it was "urgently looking into the issues raised" by the allegations.
One allegation was that Brand had teenage girls driven to his home via BBC cars. However, the interim update from Mr Johnston said: "Due to the passage of time the BBC's records of car bookings are no longer available.
"This means that we have not been able to identify the precise details of this or any records or details of specific journeys or bookings made for Russell Brand."
