Former presidential hopeful Mohamed ElBaradei, a one-time head of the International Atomic Energy Agency, will arrive in Cairo from Vienna on Tuesday.

A number of revolutionary youth are expected to be present to welcome him at the airport.

ElBaradei had withdrawn last winter from the Egypt presidential race, condemning the roadmap drawn for Egypt's transition period by the ruling military council (SCAF), and arguing that a constitution must be drafted to specify the powers of the president before the elections take place.

ElBaradei later co-founded the new Constitution Party along with many pro-revolution figures such as author Alaa El-Aswany, international law professor Hossam Eissa, and activists Ahmed Harara and Hala Shukrallah.