Constitution Party founder and National Salvation Front (NSF) leader Mohamed ElBaradei has said the government and prosecutor-general should step down for the sake of the country.

"Keeping the government and the prosecutor-general crumbles the chances of building a national consensus, escalates political struggles, makes communities more polarised and causes economic deterioration," ElBaradei said via Twitter on Thursday.

On 25 March, the NSF indefinitely postponed the first meeting of a planned series of "roundtable discussions" after two parties announced they would not take part.

The discussions were prompted by the country's political malaise and were geared towards establishing a framework for making constitutional amendments and building a consensus over the appointment a new prosecutor-general – two major demands of the opposition.

The NSF invited the Misr Party, the Reform and Development Party (RDP), the Salafist Nour Party and the Strong Egypt Party to join the talks. The latter two parties rejected the invitation.

On Wednesday, the Salafist Nour Party said it would resume talks with all political forces "without exception."

"We don't want to make coalitions with certain parties and disregard others," party secretary-general Galal Mora was quoted as saying by Al-Ahram's Arabic-language news website. "The Nour Party seeks to hold extensive dialogue with all political parties – without exception – in hopes of ending Egypt's ongoing political crisis."

"This is why the party rejected negotiations proposed by the NSF," Mora added.

Prosecutor-General Talaat Abdullah is under pressure after a court last week reversed President Morsi's decision on 22 November to dismiss former prosecutor-general Abdel-Meguid Mahmoud and appoint Abdullah.

Many opposition groups are demanding the dismissal of Abdullah on the grounds that he was appointed by the president and not by the Supreme Judicial Council, as required by law.