CAIRO (AFP) - Egypt's presidency said on Saturday that liberal leader Mohamed ElBaradei has not been officially appointed prime minister, after several official sources said the former UN nuclear watchdog chief had been named premier.

"Interim president Adly Mansour met today with Dr. ElBaradei but so far there has been no official appointment," presidential advisor Ahmed al-Muslimani told reporters.

He added, however, that Mr ElBaradei was "the logical choice" among a list of names being considered in the wake the military's ouster on Wednesday of Islamist president Mohamed Mursi.

A source close to the negotiations told AFP different camps that agreed to the military's roadmap for a political transition were still trying to convince the Salafist Al-Nour Party to back ElBaradei.