Mexican President Enrique Peña Nieto has appointed economist Enrique Ochoa Reza as new chief executive of state electricity monopoly CFE, the Energy Secretariat said Wednesday.

Ochoa Reza replaces Francisco Rojas, who submitted his resignation on Tuesday "for personal reasons," the secretariat said, hailing Rojas' leadership during a "time of great transformations."

The president chose Ochoa Reza "to continue the work of strengthening and modernizing CFE within the framework of the energy-sector overhaul" signed into law in December, it added.

Ochoa Reza, who is also an attorney, was appointed deputy hydrocarbons secretary in December 2012 by the newly inaugurated Peña Nieto and served in that capacity until Wednesday.

He also is a member of state oil giant Petroleos Mexicanos' board of directors. EFE