Mohamed Adel, a member of the April 6 Youth Movement’s political bureau, announced on Tuesday his group's rejection of a call by President Mohamed Morsi for national dialogue.
On Monday, Morsi called for reconciliation between differing political forces during his speech at a national conference organised by Islamist parties, calling on groups to put aside political rivalries and stand united against challenges facing Egypt.
The youth movement described Morsi’s initiative as an attempt to reduce the youth's anger amid "his ongoing failure to run the country."
He added that the initiative did not explain how any possible solutions reached through the dialogue would be implemented.
"The presidential team with Morsi do not even believe in dialogue with the opposition on any issue," said Adel.
Morsi’s invitation comes only weeks before planned mass demonstrations by opposition forces on 30 June to demand early presidential elections.
The April 6 Youth Movement, one of the prominent opposition groups in Egypt, had supported President Morsi in the June 2012 presidential elections against Mubarak-era candidate Ahmed Shafiq.
However, the movement has been increasingly critical of Morsi's policies, accusing the Muslim Brotherhood leader of betraying his pro-revolution campaign promises.