Mrs Winifred Ekanem Oyo-Ita has finally bowed out of the civil service of the Federation.
President Muhammadu Buhari has announced Mrs Folasade Yemi-Esan as her acting successor.
The announcement was made Wednesday on Twitter @presidencynigeria.
Yemi-Esan, until her appointment was the Permanent Secretary, Ministry of Petroleum Resources.
Oyo-Ita has been directed to proceed on an indefinite leave to allow conclusion of the investigation being carried out by EFCC.
The President has also approved the extension of the tenure of seven retiring Permanent Secretaries for one year with effect from 1st October, 2019.
The statement said the permanent secretaries were given an extension to ensure stability in the Federal Civil Service and effective delivery on the nine priority areas of the administration as well as the mandates given to the new Ministers.