Egypt's radical opposition group Muslim Brotherhood confirmed on Tuesday it will support the former IAEA director and opposition point man Mohammed ElBaradei in forming a national unity government.

ElBaradei, who made a short appearance at Tahir square on Sunday, has made it clear his demand is for immediate stepping down of President Hosni Mubarak.

The Muslim Brotherhood said in a terse message published on its website on Tuesday it will support liberal larders such as ElBaradei to form a national unity government.

The banned outfit is ironically the largest political force in the country and its support will be curial for anyone aiming to plan a post-Mubarak political future for the country.

Though ElBaradei doesn't call the Brotherhood as an extremist religious organization, he has been skeptical about it in the past.