Ponta appointed Andreea Lambru to the position.
The agency found Mihalache was incompatible with public office between May 10 and June 8, 2012, when he was also the administrator of a consultancy firm. Mihalache was appointed government secretary on May 10.
Also late last week, the integrity agency issued incompatibility declarations targeting Transport Minister Ovidiu Silaghi, Tourism Minister Eduard Hellvig and former education minister Liviu Pop.