Saleh, hurt by an explosion as he prayed at a mosque inside the presidential compound, is convalescing in Riyadh after undergoing two successful operations on Sunday as thousands took to streets in Sanaa to celebrate his departure.
A youths' committee which has been a key player behind an uprising against Saleh's nearly 33 years of autocratic rule called on Monday for immediate steps to ensure a power transfer.
It urged "all national and political forces to begin with forming an interim presidential council... and creating a national transitional council," in a statement.
The committee also called for the forming of a "government of technocrats" to lead the transition.
The youth group, organisers of an anti-regime sit-in demonstration at a square in Sanaa since February, encouraged people to celebrate what they hailed as "the ouster of Saleh."
"The revolution has achieved its first objective -- the ouster of Saleh," it said, adding the protesters would "continue (their) sit-in until the achievement of all goals."
Tens of thousands of people took to the streets of Yemen's capital yesterday to celebrate what they said was the end of Saleh's regime. Hundreds also celebrated in the second-largest city Taez.
Yemen's parliamentary opposition vowed yesterday to prevent Saleh's return to Yemen.